{"title":"Humidity sensors","description":null,"products":[{"product_id":"feuchtigkeitssensor-mit-xh2-54-3p-buchse","title":"Humidity sensor - 3-pin XH2.54, 3-5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eMeasures relative humidity and temperature in one module\u003c\/li\u003e \u003cli\u003eMeasurement range: 0 to 100 percent relative humidity, -40 to +80 degrees Celsius\u003c\/li\u003e \u003cli\u003eAnalog outputs or digital interface, depending on the variant\u003c\/li\u003e \u003cli\u003eXH2.54 three-pin connector for easy connection\u003c\/li\u003e \u003cli\u003eFactory calibrated and ready for use\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eA humidity sensor with an XH2.54 connector simultaneously measures humidity and temperature. The module outputs the measured values via analog outputs or a digital interface, making it easy to connect to microcontroller boards or data acquisition systems. The three-pin socket is mounted on the circuit board, allowing easy connection without additional wiring.\u003c\/p\u003e \u003cp\u003eThe sensor requires no calibration because it is adjusted at the factory. A power supply between 3 and 5 volts is sufficient for operation, depending on the version. Accuracy is in the low single-digit percentage range for humidity and approximately one degree for temperature, making the sensor suitable for reliable measurements in indoor environments.\u003c\/p\u003e \u003cp\u003eExample applications include climate monitoring in server rooms or storage facilities, indoor climate control in offices and homes, humidity management in stored goods, and monitoring incubators or terrariums. The module is also used in portable environmental measurement kits.\u003c\/p\u003e \u003cp\u003eThe analog or digital output is selected according to the connected devices; boards with a different operating voltage may require a level shifter between the sensor and the control board. Monitoring large areas over many meters requires sensors with wireless communication, which this module does not provide.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes. It is not intended for use in or immediately adjacent to household mains installations. When connecting it to other devices or power sources, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1* Humidity sensor with XH2.54 3P socket\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997798736221,"sku":"F23109068","price":3.18,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/feuchtigkeitssensor-mit-xh254-3p-buchse-funduino-8676303.jpg?v=1791494496"},{"product_id":"cjmcu-sht10-temperatur-feuchtigkeitssensor","title":"SHT10 temperature and humidity sensor - I2C, 2.4-5.5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined temperature and humidity sensor with digital output\u003c\/li\u003e \u003cli\u003eTemperature measuring range -40 to +123.8 °C, humidity 0 to 100% relative humidity\u003c\/li\u003e \u003cli\u003eAccuracy ±0.5 °C and ±3% relative humidity\u003c\/li\u003e \u003cli\u003eI2C interface for connection to microcontroller boards\u003c\/li\u003e \u003cli\u003eFactory-calibrated, no adjustment required\u003c\/li\u003e \u003cli\u003eOperating voltage 2.4 to 5.5 V\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe sensor measures temperature and relative humidity in a single component and outputs the measured values digitally. The interface is I2C, a serial protocol that allows multiple sensors to share a common bus and requires only two lines for communication and clock signals. This helps save pins on the microcontroller.\u003c\/p\u003e \u003cp\u003eThe measurement principle is based on capacitive and resistive elements that respond to changes in temperature and humidity. The integrated ADC digitizes the measured values directly in the sensor. The accuracy is sufficient for applications involving general monitoring, but not for laboratory-grade measurements. The factory calibration is stable, so recalibration is not necessary.\u003c\/p\u003e \u003cp\u003eApplications include climate control in rooms or enclosures, storage monitoring for moisture-sensitive goods, outdoor weather stations within the limits of the temperature range, and environmental sensors in data loggers. The sensor also automatically monitors parameters in plant cultivation systems and incubators.\u003c\/p\u003e \u003cp\u003eThe sensor operates at voltages from 2.4 to 5.5 V, making it compatible with common boards using 3.3 or 5 V logic without additional level shifters. The I2C address is fixed at the factory, so using multiple sensors requires changing the address or using a multiplexer. The operating current is below 1 mA during measurement. Operation requires only a power supply and an I2C master interface; no additional accessories are needed.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes. It must not be integrated into the household electrical circuit. Work on or near household electrical installations requires a qualified electrician; consult one before commissioning if in doubt.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x CJMCU SHT10 temperature and humidity sensor\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997807681885,"sku":"F23107783","price":16.07,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/cjmcu-sht10-temperatur-feuchtigkeitssensor-funduino-7441696.jpg?v=1791473952"},{"product_id":"digitaler-temperatur-luftfeuchte-sensor-shtc3-i2c-alternative-zu-dht22-am2302","title":"SHTC3 temperature sensor - humidity, I2C, 3.3-5.5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital temperature and humidity sensor with I2C interface\u003c\/li\u003e \u003cli\u003eOperating voltage 3.3 to 5.5 V, direct connection to 3.3 V and 5 V systems without a level shifter\u003c\/li\u003e \u003cli\u003e4 connection pins, fixed I2C address 0*70\u003c\/li\u003e \u003cli\u003eCompatible with Arduino, Raspberry Pi, ESP32\u003c\/li\u003e \u003cli\u003eLow power consumption for battery-powered applications\u003c\/li\u003e \u003cli\u003eForm factor like the DHT22, but with a digital I2C interface instead of a single signal\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis temperature and humidity sensor uses the I2C interface to output both measured values digitally. This eliminates the need to perform complex analysis of a time-critical signal pattern as with the DHT22, significantly simplifying control. The measured values are retrieved via the two SDA and SCL lines.\u003c\/p\u003e \u003cp\u003eThe module operates with voltages between 3.3 and 5.5 V and includes voltage regulation to supply the sensor chip. This allows the module to be connected directly to 3.3 V boards such as the Raspberry Pi as well as to 5 V systems such as standard Arduino boards, without requiring an additional level shifter.\u003c\/p\u003e \u003cp\u003eConnection is made via four pins for power, ground, and the SDA and SCL data lines. With the fixed I2C address 0*70, the software addresses the sensor directly. Multiple identical sensors require an I2C multiplexer to operate on the same bus. Indoor climate monitoring, weather stations, and humidity control systems benefit from reliable dual measurement. The sensor is also suitable for battery-powered devices because its power consumption remains low.\u003c\/p\u003e \u003cp\u003eThe form factor matches familiar humidity sensors, but as a replacement for the DHT22 it enables a switch to I2C communication if the application software is adapted. Operation requires only the four connection pins and a power supply within the specified voltage range.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes, and is not suitable for installation in household mains circuits. Work on or near electrical installations must be carried out by a qualified electrician. If you are unsure about commissioning the module, consult a qualified electrician before starting.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1× Digital temperature \u0026amp; humidity sensor SHTC3 (I2C) - Alternative to DHT22\/AM2302, incl. connection cable\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997813809501,"sku":"F23105736","price":4.09,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/digitaler-temperatur-luftfeuchte-sensor-shtc3-i2c-alternative-zu-dht22am2302-funduino-4448110.png?v=1791474006"},{"product_id":"aht10-digitaler-temperatur-feuchtigkeitssensor-i2c","title":"AHT10 temperature and humidity sensor - I2C, 2.4-5.5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital temperature and humidity sensor for I2C bus\u003c\/li\u003e \u003cli\u003eTemperature measurement range −40 to +85 °C\u003c\/li\u003e \u003cli\u003eHumidity measurement range 0 to 100% relative humidity\u003c\/li\u003e \u003cli\u003eAccuracy ±2% (humidity) and ±0.3 °C (temperature)\u003c\/li\u003e \u003cli\u003eI2C interface, address switching via hardware possible\u003c\/li\u003e \u003cli\u003eOperating voltage 2.4 to 5.5 V\u003c\/li\u003e \u003cli\u003eFactory calibrated, no recalibration required\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThe AHT10 is a digital sensor for temperature and humidity with an I2C interface. It records both measured values via a single data line and sends them serially to the connected controller. Since multiple modules can be connected to one I2C bus and the slave address can be switched via hardware, up to two sensors of this type can be operated in parallel without additional wiring.\u003c\/p\u003e \u003cp\u003eThe measured values are factory calibrated. Recalibration is not necessary. The sensor is suitable for room climate monitoring, storage monitoring, and automation applications where humidity and temperature must be measured together. The wide temperature range of −40 to +85 °C also makes the sensor suitable for outdoor measurements or temperature-stressed environments.\u003c\/p\u003e \u003cp\u003eThe operating voltage range of 2.4 to 5.5 V allows direct connection to common microcontroller boards without additional voltage converters. I2C requires standard logic levels; level shifting for 3.3 V systems is only necessary if the I2C bus of other components already operates at 5 V levels. All that is still needed for operation is a suitable software library for the development system being used.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThe sensor is intended exclusively for building prototypes and for testing and development purposes, and is not suitable for installation in the household electrical circuit. Work on or near electrical installations must be carried out by qualified electricians; if you are unsure about correct integration into existing systems, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x AHT10 Digital temperature \u0026amp; humidity sensor, I2C\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997824622941,"sku":"F23108307","price":2.47,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/aht10-digitaler-temperatur-feuchtigkeitssensor-i2c-funduino-7513486.png?v=1791493602"},{"product_id":"gy-213v-hdc1080-temperatur-und-feuchtigkeitssensor","title":"GY-213 V HDC1080 temperature and humidity sensor - I2C, 3.3 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital temperature and humidity sensor for prototypes and measurement projects\u003c\/li\u003e \u003cli\u003eTemperature measurement range -40 to 85 °C, accuracy ±0.2 °C\u003c\/li\u003e \u003cli\u003eHumidity measurement range 0 to 100% relative humidity, accuracy ±3%\u003c\/li\u003e \u003cli\u003eI2C interface, addressable for multiple modules on one bus\u003c\/li\u003e \u003cli\u003eOperating voltage 3.3 V\u003c\/li\u003e \u003cli\u003eCompact design with a 0.5 * 0.5 cm sensor IC\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eA combined temperature and humidity sensor with an I2C interface enables reliable measurements in prototypes and development projects. The sensor measures both values via a single digital output and provides calibrated readings without additional signal conditioning.\u003c\/p\u003e \u003cp\u003eThe high accuracy of ±0.2 °C for temperature measurement and ±3% for humidity measurement makes the module suitable for precise applications. The wide temperature range of −40 to 85 °C also covers extreme conditions. Since the readings are already available digitally, no analog evaluation is required.\u003c\/p\u003e \u003cp\u003eSeveral sensors can be operated in parallel on a microcontroller via the I2C interface without requiring additional connection lines. Typical applications include room climate measurements in automation projects, monitoring storage conditions for temperature-sensitive materials, and humidity control in enclosures and boxes. The sensor is also used in mobile data loggers.\u003c\/p\u003e \u003cp\u003eThe module requires an operating voltage of 3.3 V. When connecting it to 5 V systems, a level shifter for the I2C signals is required. Control is carried out using the standard I2C libraries of common microcontroller platforms. Calibration before commissioning is not required.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes, not for integration into household electrical circuits. A qualified electrician is required when working on or near electrical installations. If in doubt, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x GY 213V HDC1080 temperature and humidity sensor\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997830652253,"sku":"F23106532","price":5.55,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/gy-213v-hdc1080-temperatur-und-feuchtigkeitssensor-funduino-9151308.png?v=1791493149"},{"product_id":"feuchtigkeitssensor-analog-und-digital","title":"Capacitive moisture sensor - analog and I2C, 3.3-5.5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCapacitive humidity sensor with analog and digital output interfaces\u003c\/li\u003e \u003cli\u003eMeasuring range from 0 to 100 percent relative humidity\u003c\/li\u003e \u003cli\u003eAnalog output from 0 to 3.3 volts for direct level readings\u003c\/li\u003e \u003cli\u003eI2C interface for serial data transmission with multiple sensors on one bus\u003c\/li\u003e \u003cli\u003eOperating voltage from 3.3 to 5.5 volts, with voltage regulator for a wide input voltage range\u003c\/li\u003e \u003cli\u003eCalibration-free operation with factory-calibrated readings\u003c\/li\u003e \u003cli\u003eSmall SMD design for space-saving integration into circuits\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eA capacitive humidity sensor with dual interfaces measures relative humidity and provides the readings in two ways. The analog output supplies voltages between zero and 3.3 volts and is suitable for direct readout by analog-to-digital converters; the I2C bus, on the other hand, enables multiple sensors to operate on one line, significantly reducing the number of required connection pins.\u003c\/p\u003e \u003cp\u003eThe sensing element uses the change in capacitance as humidity increases. Factory calibration eliminates the need for adjustment, allowing the module to operate immediately after connection without calibration. Operating voltages between 3.3 and 5.5 volts are handled by the integrated regulator, enabling use with various power supply configurations.\u003c\/p\u003e \u003cp\u003eTypical applications include climate monitoring in storage or living areas, with measurement resolution across the full range from zero to 100 percent relative humidity, as well as soil moisture measurements in horticulture or agriculture. Where a fast response to humidity changes is required, such as in drying processes or material moisture monitoring, the two outputs prevent delays caused by protocol overhead.\u003c\/p\u003e \u003cp\u003eFor operation via the analog output, a microcontroller with an A\/D converter and three connections is sufficient; for I2C use, only a two-wire data connection is required in addition to the power supply. Level shifting for 5-volt logic on the data line is required only when operating with a sensor supply voltage of 3.3 volts; it is not needed when the sensor is supplied with 5 volts.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe sensor is not intended for installation in household mains circuits and is exclusively designed for building prototypes and for testing and development purposes. Work on or near electrical installations must be carried out by qualified electricians; if you are unsure about the correct level shifting or operating voltage, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003eHumidity sensor\u003c\/li\u003e \u003cli\u003eBreakout board\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997854277981,"sku":"F23106523","price":5.33,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/feuchtigkeitssensor-analog-und-digital-funduino-8741897.png?v=1791494087"},{"product_id":"wasserstandsensor-schwimmschalter-horizontal","title":"Horizontal float switch - water level sensor, 5 V, normally open","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eFloat switch for water level detection, horizontally oriented design\u003c\/li\u003e \u003cli\u003eMagnetic switch operating principle, switches when the float rises\u003c\/li\u003e \u003cli\u003eContact, normally open (NO), active at water level\u003c\/li\u003e \u003cli\u003eMaximum operating voltage 5 V\u003c\/li\u003e \u003cli\u003eMaximum current rating 10 mA\u003c\/li\u003e \u003cli\u003eConnection via two-pin header, 2.54 mm pitch\u003c\/li\u003e \u003cli\u003eStainless steel float for corrosion resistance in fresh and brackish water\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eA float switch is used for reliable detection of water levels in containers, tanks and open bodies of water. The device uses the buoyancy principle: as the water rises, the stainless steel float rises and actuates an integrated magnetic switch, which closes a contact.\u003c\/p\u003e \u003cp\u003eThe horizontal design is particularly suitable for applications with limited space or when the sensor surface is to be arranged parallel to the water surface. The normally open contact can be connected directly to 5 V logic of a microcontroller board, provided that the current consumption remains below 10 mA. For higher loads, a relay is used as an intermediate stage.\u003c\/p\u003e \u003cp\u003eTypical applications include aquaponics systems for monitoring the fill level of nutrient tanks, automatic irrigation systems that are intended to switch off when there is insufficient water, and emergency systems in laboratories that need to report a change in water level. In model-making scenarios with water tanks, the sensor also enables simple, electronically controlled level monitoring without an external power supply for the sensor itself.\u003c\/p\u003e \u003cp\u003eOperation requires only a voltage source between 0 and 5 V. The float reacts differently depending on the type of water; fresh water and brackish water are unproblematic, while salt water requires regular inspection and cleaning of the float.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis sensor is not designed for installation in domestic water pipes or operation under pressure. The float switch is intended exclusively for prototype development and for testing and demonstration purposes in laboratories, hobby projects and educational institutions. Work on or immediately next to electrical installations may only be carried out by a qualified electrician; if in doubt, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Water level sensor with horizontal float\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997934723421,"sku":"F23106361","price":3.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/wasserstandsensor-schwimmschalter-horizontal-funduino-6564017.png?v=1791493392"},{"product_id":"dht22-temperatur-und-feuchtigkeitssensor-ohne-breakoutboard","title":"DHT22 temperature and humidity sensor - without PCB, 3.3-5.5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital combination sensor for temperature and relative humidity\u003c\/li\u003e \u003cli\u003eBare sensor without carrier board, four connection pins in a row\u003c\/li\u003e \u003cli\u003eProprietary digital single-wire interface, not compatible with the Dallas bus or I²C\u003c\/li\u003e \u003cli\u003eExternal pull-up resistor required\u003c\/li\u003e \u003cli\u003eOperating voltage 3.3 to 5.5 V\u003c\/li\u003e \u003cli\u003eTemperature measurement range −40 to 80 °C, humidity 0 to 99.9% RH\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis combination sensor measures temperature and relative humidity simultaneously using a capacitive humidity-sensing element and a thermistor. The measured values are processed digitally and output via a single-wire interface, so no analog-to-digital converter is required.\u003c\/p\u003e \u003cp\u003eCommunication follows a proprietary protocol that is not compatible with the Dallas standard. The microcontroller briefly pulls the data line low, after which the sensor sends back a data packet containing humidity and temperature values along with a checksum.\u003c\/p\u003e \u003cp\u003eSince the sensor is supplied without a carrier board, it lacks the pull-up resistor typically found on breakout modules. An external pull-up resistor must be added between the data line and the supply voltage. Only three of the four connection pins are used: supply voltage, ground, and data line.\u003c\/p\u003e \u003cp\u003eThe sensor is used in weather stations, indoor climate monitoring systems, and data loggers where temperature and humidity need to be recorded simultaneously. Its operating voltage of 3.3 to 5.5 V makes it compatible with various microcontroller platforms. Libraries for common development environments support the single-wire protocol; depending on the board used, minor adjustments to the control code may be necessary.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eAn external pull-up resistor on the data line is required for reliable operation. The sensor is intended exclusively for building prototypes and for testing and development purposes, and is not suitable for installation in household electrical circuits.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x DHT22 temperature and humidity sensor (without breakout board)\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997946257757,"sku":"F23106799","price":7.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/dht22-temperatur-und-feuchtigkeitssensor-ohne-breakoutboard-funduino-7530010.png?v=1791495069"},{"product_id":"regentropfen-sensor","title":"Rain sensor - sensor plate with evaluation board, 3.3-5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eRain sensor with separate sensor plate and evaluation electronics\u003c\/li\u003e \u003cli\u003eDigital output (TTL) and analog output for flexible readout\u003c\/li\u003e \u003cli\u003eOperating voltage of 3.3 to 5 V, directly connectable to microcontroller boards\u003c\/li\u003e \u003cli\u003eDigital threshold sensitivity adjustable via potentiometer\u003c\/li\u003e \u003cli\u003eSensor plate with nickel-plated copper tracks, evaluation board connected by cable\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eA rain sensor consists of two separate boards connected by a short cable. The sensor plate features parallel nickel-plated copper tracks and is placed outdoors. The smaller evaluation board with the comparator remains protected, as only the sensor surface needs to withstand the weather.\u003c\/p\u003e \u003cp\u003eRaindrops create a conductive connection between the parallel copper tracks, reducing the resistance. The evaluation electronics detect this change and output the signal in two ways, The digital output provides a TTL signal that is HIGH when dry and LOW when rain is detected. The analog output provides a voltage proportional to the moisture level, which can be connected to an ADC input of a microcontroller. This allows the module to function both as a switch for simple rain detection and for roughly estimating rainfall intensity.\u003c\/p\u003e \u003cp\u003eThe module is used in weather stations, for automatic irrigation control, and as a trigger for closing window or awning motors when rain begins. Separating the sensor plate from the electronics enables flexible installations in which only the robust copper plate is outdoors.\u003c\/p\u003e \u003cp\u003eThe digital threshold can be adjusted via the potentiometer without programming. The operating voltage of 3.3 to 5 V makes the module compatible with common microcontroller boards. For outdoor use, the evaluation board should be housed in a protective enclosure.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes and is not suitable for installation in household mains circuits. The sensor surface is exposed to the weather and should be checked regularly. Work on or in the immediate vicinity of electrical installations must be carried out by a qualified electrician; if in doubt, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Raindrop Sensor\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997953237341,"sku":"F23106845","price":1.82,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/regentropfen-sensor-funduino-3882679.png?v=1791495119"},{"product_id":"dht11-temperatursensor-luftfeuchtigkeitssensor-ohne-breakoutboard","title":"DHT11 temperature sensor - humidity, 3,3-5,5 V, without breakout board","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined temperature and humidity sensor with digital output\u003c\/li\u003e \u003cli\u003eTemperature measuring range 0 to 50 °C, humidity 20 to 80 %\u003c\/li\u003e \u003cli\u003eAccuracy ±2 °C temperature, ±5 % humidity\u003c\/li\u003e \u003cli\u003eConnection via three pins (power supply, ground, data line)\u003c\/li\u003e \u003cli\u003eOperating voltage 3.3 to 5.5 V\u003c\/li\u003e \u003cli\u003eOutput as a digital signal, directly connectable to microcontroller boards\u003c\/li\u003e \u003cli\u003eLong-term stability requires a calibration offset after extended storage\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe DHT11 is a combined temperature and humidity sensor that outputs a digital signal directly to microcontrollers. The module measures temperatures from 0 to 50 °C and humidity between 20 and 80%; outside these ranges, the sensor provides unreliable readings. Accuracy is approximately ±2 °C for temperature and ±5 % for relative humidity.\u003c\/p\u003e \u003cp\u003eThe sensor operates at 3.3 to 5.5 V and is therefore directly compatible with standard microcontroller boards. Data is output via a simple digital interface that requires only one data line in addition to power and ground; the required control can be implemented with just a few lines of code. The measurement interval is approximately two seconds; more frequent queries are not possible and unnecessarily extend the response time.\u003c\/p\u003e \u003cp\u003eTypical applications include weather models, inventory management, and indoor climate monitoring. For example, a greenhouse control system could control heating or ventilation based on sensor readings. Anyone who needs to monitor long storage chains or set up a humidity alarm for storage rooms will find an affordable solution here.\u003c\/p\u003e \u003cp\u003eAfter extended storage, measurement accuracy may deteriorate and require calibration using a known reference value. For temperature measurements outside the 0-to-50-°C range or humidity measurements below 20 or above 80%, a different sensor element is required; the same applies to accuracy requirements better than ±2 °C or ±5 %. In addition to the sensor, a power supply and a microcontroller or single-board computer are required to read and process the data.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe sensor is intended exclusively for building prototypes and for testing and development purposes. After extended storage, the readings should be checked against a calibrated reference device. Work on or immediately adjacent to electrical installations is reserved for qualified electricians; if there is any uncertainty about the power supply, consult a qualified electrician before operation.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x DHT11 - temperature sensor, humidity sensor without breakout board\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997954810205,"sku":"F23106840","price":2.73,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/dht11-temperatursensor-luftfeuchtigkeitssensor-ohne-breakoutboard-funduino-5119770.png?v=1791496051"},{"product_id":"gy-bme280-luftdruck-feuchtigkeits-temperatursensor-i2c-spi","title":"GY-BME280 sensor module - air pressure, humidity, temperature, I2C","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined sensor for air pressure, humidity, and temperature\u003c\/li\u003e \u003cli\u003eAir pressure measurement range: 300 to 1100 hPa\u003c\/li\u003e \u003cli\u003eRelative humidity measurement range: 0 to 100 percent\u003c\/li\u003e \u003cli\u003eTemperature measurement range: −40 to +85 degrees Celsius\u003c\/li\u003e \u003cli\u003eCommunication via I2C bus\u003c\/li\u003e \u003cli\u003eOperating voltage: 3.3 V\u003c\/li\u003e \u003cli\u003eCompact design with four connections\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe air pressure, humidity, and temperature sensor combines three measurement functions in a compact module. This sensor can be used to implement weather monitoring, monitor indoor air conditions, or detect changes in altitude without having to install three separate sensors.\u003c\/p\u003e \u003cp\u003eThe module operates via the I2C bus and requires only two data lines plus a power supply, keeping wiring requirements low while allowing multiple modules to be operated on the same bus. The operating voltage is 3.3 V, enabling direct use with boards featuring this logic voltage. A level shifter is required for connection to 5 V boards.\u003c\/p\u003e \u003cp\u003eThe sensor measures air pressure values between 300 and 1100 hPa for weather forecasting or altitude measurement, relative humidity from 0 to 100 percent for determining indoor climate conditions, and temperatures from −40 to +85 degrees Celsius. Typical applications include weather station projects with local pressure and temperature trends, monitoring storage rooms and cabinets for critical humidity levels, altitude measurement in model aircraft, or combining the sensor with other sensors in larger measurement systems.\u003c\/p\u003e \u003cp\u003eThe module is supplied without a power supply, so a power supply with a 3.3 V output voltage is required. Programming requires the target board's I2C drivers and the corresponding sensor library.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes. It must not be installed in household electrical circuits. If anything is unclear before commissioning, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x BME280 - Air pressure sensor, humidity sensor, temperature sensor - I2C\/SPI\u003c\/li\u003e \u003cli\u003e1x Pin header\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997957497181,"sku":"F23106637","price":8.74,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/gy-bme280-luftdruck-feuchtigkeits-temperatursensor-i2cspi-funduino-8180476.png?v=1791496099"},{"product_id":"grove-bodenfeuchte-sensor","title":"Grove soil moisture sensor - analog measurement with 2 probes","description":"\u003cp\u003eThis Grove sensor can measure soil moisture for plants, for example. The soil moisture sensor consists of two probes that allow current to flow through the soil and then determine resistance values to measure the soil moisture content. This can be used, for example, to determine whether plants in the garden need to be watered or to automate plant watering. The sensor is very easy to use: simply insert it into the soil and read the output using an ADC. \u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eBotanical horticulture\u003c\/li\u003e \u003cli\u003eMoisture sensing\u003c\/li\u003e \u003cli\u003eConsistency measurement\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eCost-effective: Ideal for students, makers, and IoT developers as DIY enthusiasts and prototype designers.\u003c\/li\u003e \u003cli\u003ePlug-and-play: Grove-compatible interface (data transmission) and two large pads serve as probes (data collection).\u003c\/li\u003e \u003cli\u003eBeginner-friendly: Detailed start-up tutorials, numerous resources and projects in the wiki and community.\u003c\/li\u003e \u003cli\u003eEffective measurement: Based on measuring soil resistance, high moisture results in lower resistance and vice versa.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical details\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eWeight: GW 10g\u003c\/li\u003e \u003cli\u003eBattery: not included\u003c\/li\u003e \u003cli\u003eOperating voltage: 3.3 ~ 5 V\u003c\/li\u003e \u003cli\u003eOperating current: 35mA\u003c\/li\u003e \u003cli\u003eSensor output value in dry soil: 0~ 300\u003c\/li\u003e \u003cli\u003eSensor output value in moist soil: 300~700\u003c\/li\u003e \u003cli\u003eSensor output value in water: 700 ~ 950\u003c\/li\u003e \u003cli\u003eDimensions: 60x20x6.35mm\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePackage contents:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1x Grove - Soil Moisture Sensor\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eFurther information:\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003ca title=\"YouTube-Video von Seeed Studio\" href=\"https:\/\/www.youtube.com\/watch?v=UYhCGxaZXps\u0026amp;t=1s\"\u003ehttps:\/\/www.youtube.com\/watch?v=UYhCGxaZXps\u0026amp;t=1s\u003c\/a\u003e\u003c\/p\u003e","brand":"Seeedstudio","offers":[{"title":"Default Title","offer_id":65998145421661,"sku":"F23106344","price":3.97,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/grove-bodenfeuchte-sensor-funduino-5549519.jpg?v=1791495297"},{"product_id":"dht22-temperatur-und-feuchtigkeitssensor","title":"DHT22 temperature and humidity sensor - breakout board, 3,3-5,5 V","description":"\u003cp\u003eOverview:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eis supplied with a breakout board and can be used directly with a microcontroller\u003c\/li\u003e \u003cli\u003emeasures humidity in the range of 0-100% with ~ 2% accuracy\u003c\/li\u003e \u003cli\u003emeasures temperature in the range of -40 to 80°C with ~ 0.5°C accuracy\u003c\/li\u003e \u003cli\u003eOperating voltage: 3.3 - 5.5V \u003c\/li\u003e \u003cli\u003eConnection type: 3-pin\u003c\/li\u003e \u003cli\u003eMounting hole: 2.6mm\u003c\/li\u003e \u003cli\u003eSize: \u003cspan\u003eapprox. 42.5 x 25 x 10mm\u003c\/span\u003e\n\u003c\/li\u003e \u003cli\u003e\u003cspan\u003eWeight: approx. 7g\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eHelpful links:  \u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003ca title=\"Weiterleitung zu funduino.de\" href=\"http:\/\/funduino.de\/anleitung-dht11-dht22\" target=\"_blank\"\u003eFunduino instructions\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eScope of delivery: \u003c\/p\u003e \u003cul\u003e \u003cli\u003e1x DHT 22 (on breakout board) + 3 breadboard cables (female\/female)\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65998292844893,"sku":"FUN-1010567","price":6.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/dht22-temperatur-und-feuchtigkeitssensor-funduino-7865125.png?v=1791496417"},{"product_id":"dht11-temperatur-und-luftfeuchtigkeitssensor","title":"DHT11 temperature and humidity sensor - 0-50 °C, 3-5.5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined temperature and humidity sensor with digital output\u003c\/li\u003e \u003cli\u003eTemperature measuring range 0 to 50 °C, humidity 20 to 80% relative humidity\u003c\/li\u003e \u003cli\u003eAccuracy ±2 °C and ±5% relative humidity\u003c\/li\u003e \u003cli\u003eOperating voltage 3.3 to 5.5 V\u003c\/li\u003e \u003cli\u003eDigital single-wire protocol with simple control of microcontrollers\u003c\/li\u003e \u003cli\u003eIntegrated measured-value processing; calibration not required\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThe DHT11 is a combined temperature and humidity sensor with digital output. It connects directly to a microcontroller and outputs both measured values via a simple single-wire protocol that requires only one signal line. This eliminates the need for complex analog measuring circuits and analog-to-digital converters.\u003c\/p\u003e \u003cp\u003eThe sensor measures temperatures from 0 to 50 °C and relative humidity between 20 and 80%. Accuracy is ±2 °C for temperature and ±5% for humidity, which is sufficient for many practical applications. Calibration is not required because measured-value processing is already integrated.\u003c\/p\u003e \u003cp\u003eTypical applications include indoor climate monitoring in homes or workshops, automatic irrigation with humidity measurement, data loggers for storage or cultivation conditions, and weather stations. Projects with simple control systems, such as automatic ventilation or heating, can also be implemented.\u003c\/p\u003e \u003cp\u003eOperation requires a supply voltage between 3.3 and 5.5 V. The sensor can be connected to all common microcontroller boards; an interface module is not required. A power supply and the corresponding control software must be provided.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThis sensor is intended exclusively for building prototypes and for testing and development purposes. The operating voltage must not exceed the specified limits to prevent damage. If you have questions about integrating it into an existing system, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x DHT11 temperature and humidity sensor\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65998322106717,"sku":"F23106606","price":3.22,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/dht11-temperatur-und-luftfeuchtigkeitssensor-funduino-9686590.png?v=1791496459"},{"product_id":"tropfensensor-wasserstandssensor-fur-mikrocontroller","title":"Water level sensor - analog output, 3.3-5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eWater level sensor with exposed conductive tracks\u003c\/li\u003e \u003cli\u003eDigitization through resistance changes upon contact with water\u003c\/li\u003e \u003cli\u003e3-pin connector (S, +, -)\u003c\/li\u003e \u003cli\u003eAnalog voltage output for microcontroller ADC\u003c\/li\u003e \u003cli\u003eIntegrated signal amplification on the board\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eA water level sensor operates according to the resistance principle and consists of a circuit board with parallel, exposed tracks. Some of these tracks are connected to the supply voltage, while the others are connected to the signal output. As long as no water is present, these tracks remain electrically isolated.\u003c\/p\u003e \u003cp\u003eWhen water touches the sensor field, it connects adjacent conductive tracks and creates a variable resistance. The deeper the sensor is immersed in water, the more tracks are bridged, the lower the resistance becomes, and the higher the voltage measurable at output S rises. The signal amplification on the board processes this change. With a 5 V supply, a value between 0 and 1023 is generated, which the microcontroller's analog-to-digital converter reads.\u003c\/p\u003e \u003cp\u003eThe sensor is suitable for measuring fill levels in containers, detecting rain, detecting overflows, and monitoring for leaks. When a fixed threshold is set, the module also functions as a simple yes\/no water detector.\u003c\/p\u003e \u003cp\u003eSince the conductive tracks can corrode over time when continuously powered while wet, the power supply should only be switched on shortly before a measurement, for example via a digital output pin of the microcontroller. An analog input on the target board is required.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe sensor is designed only for detecting distilled or deionized water and does not work reliably with salt water or other conductive liquids. The module is intended exclusively for building prototypes and for testing and development purposes and is not intended for installation in household electrical circuits. Work on or near electrical installations must be carried out by qualified electricians; if anything is unclear, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x drop sensor, water level sensor for microcontrollers\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65998408417629,"sku":"F23107273","price":1.23,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/tropfensensor-wasserstandssensor-fuer-mikrocontroller-funduino-8289701.png?v=1791496509"},{"product_id":"feuchtigkeitssensor-fur-mikrocontroller","title":"Humidity sensor - resistive, analog, 3.3-5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eResistive moisture sensor with two contact electrodes for soil or water\u003c\/li\u003e \u003cli\u003e3-pin connection S\/+\/− for signal and power supply\u003c\/li\u003e \u003cli\u003eAnalog output 0–1023\u003c\/li\u003e \u003cli\u003eOperating voltage 3.3–5 V with current consumption below 20 mA\u003c\/li\u003e \u003cli\u003eThreshold logic is handled by the connected microcontroller\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe moisture sensor measures the water content of soil or water using two fork-shaped contact electrodes. The changing electrical resistance between the contacts is converted by an on-board circuit into an analog voltage value, which is read via the signal pin.\u003c\/p\u003e \u003cp\u003eA connected microcontroller records the measured value as a number between 0 and 1023 through its analog input. This value varies depending on the moisture of the material between the contacts; calibration or adjustment is not required. This makes it possible, for example, to detect whether potting soil is drying out or whether a water container has reached a certain fill level.\u003c\/p\u003e \u003cp\u003eThe 3-pin connection allows direct operation with microcontroller boards using 3.3 V or 5 V logic. Threshold logic for an alarm or switching action when the water content reaches a critical level must be implemented in the controller software, as the module itself only provides an analog output. For long-term stability, it is recommended to briefly dry the contact electrodes after extended measurement series.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes and is not designed for continuous operation in household electrical circuits. Work on or near electrical installations is reserved for qualified electricians. When operating with directly grounded water or in corrosive environments, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x moisture sensor for microcontrollers\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65998412185949,"sku":"F23107276","price":1.45,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/feuchtigkeitssensor-fuer-mikrocontroller-funduino-9567335.png?v=1791496544"},{"product_id":"grove-th02-temperatur-und-feuchtigkeitssensor-hochprazise","title":"Grove TH02 temperature and humidity sensor - ±0.5 °C, ±4.5 % RH","description":"\u003ch2\u003eGrove - Temperature and Humidity Sensor (High Accuracy and Small Size) v1.0\u003c\/h2\u003e \u003cp\u003eThe Grove temperature and humidity sensor is based on the TH02, which is characterized by high accuracy and compact size. This multifunctional sensor provides temperature and relative humidity information.\u003c\/p\u003e \u003ch3\u003eFeatures\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eLow power consumption: 350 µA during RH conversion\u003c\/li\u003e \u003cli\u003eHigh accuracy: Humidity: ±4.5% RH and temperature: ±0.5°C\u003c\/li\u003e \u003cli\u003eGrove unit socket: The product provides \"plug and play\" functionality and can be used flexibly for various applications.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eApplications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eIndustrial HVAC\/R\u003c\/li\u003e \u003cli\u003eThermostats\/humidistats\u003c\/li\u003e \u003cli\u003eMicroenvironments\/data centers\u003c\/li\u003e \u003cli\u003eWeather stations\u003c\/li\u003e \u003cli\u003eAutomatic control\u003c\/li\u003e \u003cli\u003eTest and inspection equipment\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e \u003ctable border=\"1\" cellpadding=\"0\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e \u003cp align=\"center\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003c\/td\u003e \u003ctd\u003e \u003cp align=\"center\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cstrong\u003eValue\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e \u003cp align=\"center\"\u003eOperating voltage range\u003c\/p\u003e \u003c\/td\u003e \u003ctd\u003e \u003cp align=\"center\"\u003e3.3 V ~ 5 V\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e \u003cp align=\"center\"\u003ePower consumption\u003c\/p\u003e \u003c\/td\u003e \u003ctd\u003e \u003cp align=\"center\"\u003e350 µA during RH conversion\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e \u003cp align=\"center\"\u003eRH operating range\u003c\/p\u003e \u003c\/td\u003e \u003ctd\u003e \u003cp align=\"center\"\u003e0 to 100%\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e \u003cp align=\"center\"\u003eHumidity measurement range\u003c\/p\u003e \u003c\/td\u003e \u003ctd\u003e \u003cp align=\"center\"\u003e0% - 80% relative humidity\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e \u003cp align=\"center\"\u003eTemperature\u003c\/p\u003e \u003c\/td\u003e \u003ctd\u003e \u003cp align=\"center\"\u003e0 ~ 70°C\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e \u003cp align=\"center\"\u003eHumidity accuracy\u003c\/p\u003e \u003c\/td\u003e \u003ctd\u003e \u003cp align=\"center\"\u003e±4.5% relative humidity\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e \u003cp align=\"center\"\u003eTemperature accuracy\u003c\/p\u003e \u003c\/td\u003e \u003ctd\u003e \u003cp align=\"center\"\u003e±0.5°C\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch3\u003eTechnical details\u003c\/h3\u003e \u003cul\u003e \u003cli\u003ePackage dimensions: 90 mm x 60 mm x 10 mm\u003c\/li\u003e \u003cli\u003eSize: 40 mm x 20 mm\u003c\/li\u003e \u003cli\u003eWeight: 9g\u003c\/li\u003e \u003c\/ul\u003e \u003cdiv class=\"is--seotext-content panel has--border is--rounded\"\u003e \u003cdiv class=\"panel--body is--wide\"\u003e \u003ch3\u003eWhat is Grove?\u003c\/h3\u003e \u003cp\u003eGrove makes connecting and experimenting easier and simplifies the prototyping process. No jumpers or soldering are required. More than 300 Grove modules have been developed, covering a wide range of applications and meeting a variety of requirements. Not only the hardware but also the software is open source. For Grove users (especially beginners), instructional PDF documents and a wiki are provided. \u003c\/p\u003e \u003cp\u003eWe offer various Grove Shields to enable connections to the Grove system with various microcontrollers. \u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003ch3\u003eBill of materials\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e1x Grove - Temperature and Humidity Sensor v1.0\u003c\/li\u003e \u003cli\u003e1x Grove Cable\u003c\/li\u003e \u003c\/ul\u003e","brand":"Seeedstudio","offers":[{"title":"Default Title","offer_id":66042606289245,"sku":"F23106163","price":14.3,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/3443-F23106163_01.png?v=1791474573"},{"product_id":"kapazitiver-feuchtigkeitssensor-1-2-version","title":"Capacitive soil moisture sensor V1.2 - 3.3-5.5 V, analog","description":"\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003ecapacitive soil moisture sensor\u003c\/li\u003e \u003cli\u003eResponse time: approx. 7000ms (measured in a glass filled with water)\u003c\/li\u003e \u003cli\u003esimple wiring with three pins\u003c\/li\u003e \u003cli\u003emade from corrosion-resistant material\u003c\/li\u003e \u003cli\u003ean ADC converter is required when operating with a Raspberry Pi\u003c\/li\u003e \u003cli\u003ecompatible with low-voltage MCUs (both 3.3V and 5V)\u003c\/li\u003e \u003cli\u003eSupply voltage: 3.3 ~ 5.5V\u003c\/li\u003e \u003cli\u003eOutput voltage: 0~3V\u003c\/li\u003e \u003cli\u003ePinout: PH2.0-3P connector cable\u003c\/li\u003e \u003cli\u003eDimensions: 98*23mm\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eHelpful links:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003ca title=\"Weiterleitung zu induux.de\" href=\"https:\/\/wiki.induux.de\/Kapazitive_Feuchtemessung\" target=\"_blank\"\u003eInformation on how the sensor works (induux.de)\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePackage contents:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1x Capacitive moisture sensor\u003c\/li\u003e \u003cli\u003e1x Connection cable (PH2.0-3P)\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66044525052253,"sku":"F25111206","price":2.01,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/kapazitiver-feuchtigkeitssensor-12-version-funduino-6176131.png?v=1791488395"},{"product_id":"grove-co2-temperatur-feuchtigkeitssensor-scd30","title":"Grove SCD30 CO2 sensor - with temperature and humidity, I2C","description":"\u003ch2\u003eGrove - SCD30\u003c\/h2\u003e \u003cp\u003eArduino-compatible 3-in-1 environmental sensor for measuring CO2, temperature, and humidity. Non-dispersive infrared (NDIR) technology for high accuracy and a wide measurement range.\u003c\/p\u003e \u003ch3\u003eFeatures:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eNDIR CO2 sensor technology: ±(30 ppm + 3%) accuracy, 400 ppm to 10,000 ppm measurement range\u003c\/li\u003e \u003cli\u003e3-in-1 environmental sensor: Integrated humidity and temperature sensor with modeling and compensation for external heat sources\u003c\/li\u003e \u003cli\u003eExcellent stability: Dual-channel detection of carbon dioxide concentration\u003c\/li\u003e \u003cli\u003eEasy project integration: Digital I2C interface, breadboard-friendly, Grove-compatible\u003c\/li\u003e \u003cli\u003eDimensions: approx. 6x4cm\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eApplication ideas:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAir purifiers\u003c\/li\u003e \u003cli\u003eEnvironmental monitoring\u003c\/li\u003e \u003cli\u003eSystem for monitoring the equipment environment\u003c\/li\u003e \u003cli\u003eArduino weather station\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eWhat is Grove?\u003c\/h3\u003e \u003cp\u003eGrove makes connecting and experimenting easier and simplifies the prototyping process. No jumpers or soldering are required. More than 300 Grove modules have been developed, covering a wide range of applications and meeting a variety of requirements. Not only the hardware but also the software is open source.\u003c\/p\u003e \u003cp\u003eWe offer various Grove shields to enable connections to the Grove system with different microcontrollers.\u003c\/p\u003e \u003ch3\u003ePackage contents:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e1x Grove - CO2, Temperature \u0026amp; Humidity Sensor (SCD30)\u003c\/li\u003e \u003c\/ul\u003e","brand":"Seeedstudio","offers":[{"title":"Default Title","offer_id":66045151215965,"sku":"F23105479","price":46.2,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/grove-co2-temperatur-feuchtigkeitssensor-scd30-funduino-8672533.png?v=1791487681"},{"product_id":"flussigkeitsstand-fullstand-sensor-edelstahl-0-110v","title":"Stainless Steel Level Sensor - 0-1 m Measuring Range, Analog","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eFlow-independent stainless steel level sensor for liquids\u003c\/li\u003e \u003cli\u003eMeasuring range from 0 to 1 m liquid level\u003c\/li\u003e \u003cli\u003eAnalog voltage-based output signal\u003c\/li\u003e \u003cli\u003e4-20-mA signal output available for remote transmission\u003c\/li\u003e \u003cli\u003eHigh-quality stainless steel immersion tube for resistance to chemicals and seawater\u003c\/li\u003e \u003cli\u003ePressure equalization via integrated capillary\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis level sensor continuously measures the liquid level in containers and tanks. The measuring principle is based on the hydrostatic pressure of the liquid surrounding the sensor's immersion tube. The resulting voltage change is converted into a proportional output signal, allowing the current liquid level to be digitally recorded.\u003c\/p\u003e \u003cp\u003eWith a measuring range from 0 to 1 m, the sensor is suitable for tanks and containers with low to medium filling depths. If you need to monitor greater liquid levels, a different device is required. The stainless steel design enables use in corrosive environments, such as saltwater applications or containers with aggressive chemicals. An internal capillary provides the necessary pressure equalization, ensuring that changes in air pressure do not distort the measurement.\u003c\/p\u003e \u003cp\u003eThe sensor can be used in supply and drainage systems for aquariums or garden ponds, in stationary tanks for fuel or heating oil, and in smaller water tanks on boats and motorhomes. It is also suitable for filling and dosing systems in laboratory applications.\u003c\/p\u003e \u003cp\u003eThe connection type varies depending on the output signal version. When choosing the analog voltage output, an analog-to-digital converter is required for digitization. Those using the 4-20-mA version need a suitable signal converter or a compatible receiver device. The sensor requires a separate power supply in accordance with the manufacturer's specifications.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThe sensor is not intended for installation in household mains circuits and may be used exclusively for building prototypes and for testing and development purposes. Work on or near electrical installations is reserved for qualified electricians. If you are unsure about the power supply or signal processing, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x liquid level sensor, stainless steel, 0 - 110V\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045338026333,"sku":"F23108331","price":6.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/fluessigkeitsstand-fuellstand-sensor-edelstahl-0-110v-funduino-8892373.png?v=1791489058"},{"product_id":"scd41-sensor-co2-temperatur-luftfeuchtigkeitssensor","title":"SCD41 CO2 Sensor - Temperature and Humidity, I2C, 3,3 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCompact sensor simultaneously measures carbon dioxide concentration, temperature, and relative humidity\u003c\/li\u003e \u003cli\u003eMeasurement based on infrared absorption with integrated compensation algorithms\u003c\/li\u003e \u003cli\u003eCO2 measurement range from 400 to 5000 ppm, temperature −10 to +60 °C, relative humidity 0 to 100%\u003c\/li\u003e \u003cli\u003eI2C interface with one address, controllable by common microcontroller boards\u003c\/li\u003e \u003cli\u003eOperating voltage 3.3 V, current consumption approximately 2 mA during active measurement\u003c\/li\u003e \u003cli\u003eHousing size 10 * 10 * 7 mm with plated-through circuit board\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eAn integrated CO2 sensor with temperature and humidity measurement enables air quality monitoring in enclosed spaces. The module uses infrared absorption to determine the carbon dioxide concentration while simultaneously measuring temperature and humidity. Since the sensor automatically adjusts its measurement accuracy based on the recorded environmental parameters, separate calibration is not required during practical operation.\u003c\/p\u003e \u003cp\u003eThe module communicates via I2C, allowing it to be integrated into existing measurement setups without additional connecting wires. The 3.3 V operating voltage means direct compatibility with common development boards and single-board computers that use this voltage level. Current consumption remains low even over longer measurement periods.\u003c\/p\u003e \u003cp\u003eThe measurement range up to 5000 ppm CO2 covers typical indoor air monitoring and also detects significantly elevated concentrations, such as those caused by poor ventilation or many people in indoor spaces. The temperature measurement range of −10 to +60 °C is suitable for indoor spaces and temperate outdoor areas. Applications include indoor climate loggers in offices and classrooms, ventilation controls that respond to CO2 thresholds, and air quality traffic lights in public buildings.\u003c\/p\u003e \u003cp\u003eOperation requires a 3.3 V power supply; a suitable voltage regulator must be provided when using power sources with a higher voltage. The I2C bus requires compatible logic levels on both sides, and appropriate readout software is required to process the measured values.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes, not for installation in the household mains circuit or permanent installation in critical systems. The data sheet specifications must be checked before commissioning. Consult a qualified electrician if you have questions about electrical safety or voltage compatibility.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x SCD41 sensor - CO2, temperature \u0026amp; humidity sensor\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045456974173,"sku":"F23107654","price":50.61,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/scd41-sensor-co2-temperatur-luftfeuchtigkeitssensor-funduino-2054046.png?v=1791490482"},{"product_id":"sht41-temperatur-feuchtigkeitssensor-mit-2x-qwiic-schnittstelle","title":"SHT41 temperature and humidity sensor - I2C, 2x QWIIC, 2.4-5.5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eTemperature and humidity sensor for I2C networks\u003c\/li\u003e \u003cli\u003eTemperature measuring range -40 to +125 °C, humidity 0 to 100% relative humidity\u003c\/li\u003e \u003cli\u003eAccuracy of ±1.5 °C and ±1.5% relative humidity across the operating range\u003c\/li\u003e \u003cli\u003eOperating voltage 2.4 to 5.5 V, directly connectable to 3.3 V and 5 V microcontrollers\u003c\/li\u003e \u003cli\u003eTwo QWIIC connectors for daisy-chaining multiple sensors without additional circuitry\u003c\/li\u003e \u003cli\u003eDigital I2C output, factory-calibrated, no readjustment required\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe SHT41 is a combined temperature and humidity sensor with an I2C interface for connection to standard microcontroller boards. It measures temperatures between -40 and +125 °C and relative humidity from 0 to 100% with an accuracy of ±1.5% each across its entire operating range. The measured values are available digitally via I2C.\u003c\/p\u003e \u003cp\u003eThe sensor operates with supply voltages between 2.4 and 5.5 V, allowing it to be connected directly to both 3.3 V boards and 5 V logic devices without level shifters or voltage regulators. The two identical QWIIC connectors make it possible to connect and address multiple SHT41 modules in series without additional wiring. The sensor is factory-calibrated, so no readjustment is required.\u003c\/p\u003e \u003cp\u003eApplications range from room climate monitoring in laboratories and living spaces to inventory monitoring in freezers, as well as process control in fermentation systems or drying ovens. Thanks to its compact format and low power consumption, the SHT41 is also suitable for portable weather devices or as an interface element between a sensor and a data logger.\u003c\/p\u003e \u003cp\u003eOnly a power supply within the sensor's voltage range and an I2C-capable microcontroller are required for operation. In the event of addressing conflicts between multiple identical modules, address jumpers or an I2C multiplexer can help.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eNot intended for installation in household mains circuits. The module is intended exclusively for building prototypes and for testing and development purposes. A qualified electrician must be consulted before commissioning if connecting to an electrical installation or in case of uncertainty.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x SHT41 temperature and humidity sensor with 2x QWIIC interface\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045601972573,"sku":"F23107776","price":9.25,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/sht41-temperatur-feuchtigkeitssensor-mit-2x-qwiic-schnittstelle-funduino-2302887.png?v=1791490199"},{"product_id":"grove-wassersensor-rc0603jr-feuchtigkeitssensor-tropfensensor","title":"Grove Water Sensor RC0603JR - water leak detector, digital and analog","description":"\u003ch2\u003eGrove – Water Sensor (RC0603JR) – Moisture Sensor\u003c\/h2\u003e \u003cp\u003eThe sensor module can detect the presence of water using exposed traces on the circuit board. By measuring conductivity, it indicates whether the sensor is dry, damp, or fully immersed in water.\u003c\/p\u003e \u003cp\u003eThe sensor traces have a weak 1 MΩ pull-up resistor. The resistor raises the value of the sensor trace until a water droplet short-circuits the sensor trace to the grounded trace. The module works with the digital I\/O pins of your Arduino, or you can use it with the analog pins to detect the contact caused by water between the grounded traces and the sensor traces.\u003c\/p\u003e \u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eRainfall detection\u003c\/li\u003e \u003cli\u003eLiquid leakage\u003c\/li\u003e \u003cli\u003eTank overflow detector\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h3\u003e \u003cul\u003e \u003cli\u003ePrecise measurement: The sensor measures the number of water droplets or the water flow through a series of exposed parallel traces to determine the water level\u003c\/li\u003e \u003cli\u003eDigital output: It is easier to read the water\/no-water status by evaluating the high and low levels\u003c\/li\u003e \u003cli\u003eGrove-compatible interface: The product ensures “plug and play” functionality and can be used flexibly for various Grove applications\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eVoltage: 4,75 - 5.25 V\u003c\/li\u003e \u003cli\u003eOperating voltage: 5,0 V\u003c\/li\u003e \u003cli\u003eCurrent: \u0026lt; 20 mA\u003c\/li\u003e \u003cli\u003eOperating temperature: 10 - 30 ℃\u003c\/li\u003e \u003cli\u003eOperating humidity (non-condensing): 10 - 90 %\u003c\/li\u003e \u003cli\u003eDimensions: 40x20x12mm\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eWhat is Grove?\u003c\/h3\u003e \u003cp\u003eGrove makes it easier to connect and experiment while simplifying the prototyping process. No jumpers or soldering are required. More than 300 Grove modules have been developed, covering a wide range of applications and meeting a variety of requirements. Not only the hardware is open source, but also the software. \u003c\/p\u003e \u003cp\u003eWe offer various Grove Shields to enable connections to the Grove system with various microcontrollers. \u003c\/p\u003e \u003ch3\u003e\u003cstrong\u003ePackage contents:\u003c\/strong\u003e\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e1x Grove – Water Sensor (RC0603JR) – Water Leak Detector\u003c\/li\u003e \u003cli\u003e1x Grove cable\u003c\/li\u003e \u003c\/ul\u003e","brand":"Seeedstudio","offers":[{"title":"Default Title","offer_id":66045603578205,"sku":"F23109045","price":2.59,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/grove-wassersensor-rc0603jr-feuchtigkeitssensor-tropfensensor-funduino-2082824.png?v=1791490197"},{"product_id":"grove-temperatur-feuchtigkeitssensor-v2-0-dht20","title":"Grove DHT20 temperature sensor - humidity, I2C","description":"\u003ch2\u003eGrove - temperature \u0026amp; humidity sensor\u003c\/h2\u003e \u003ch3\u003eDescription\u003c\/h3\u003e \u003cp\u003eThe Grove DHT20 sensor is a high-quality digital temperature \u0026amp; humidity sensor and an improved version of the DHT11. The DHT20 features a brand-new ASIC chip, an improved MEMS semiconductor capacitive humidity module, and a standard on-chip temperature element. Due to its miniaturization and design changes, the DHT20 is more robust in harsher conditions! The DHT20 is also more versatile with its I2C signal, which supports multiple masters!\u003c\/p\u003e \u003cp\u003eWith its extended and more precise measurement range, the DHT20 is suitable for various IoT applications, especially applications such as plant cultivation and quality control.\u003c\/p\u003e \u003ch3\u003eFeatures\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eHigh accuracy:\u003c\/strong\u003e \u003cul\u003e \u003cli\u003eTemperature accuracy: ± 0.5 ℃\u003c\/li\u003e \u003cli\u003eHumidity accuracy: ± 3 % RH (25 ℃)\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWide measurement ranges:\u003c\/strong\u003e \u003cul\u003e \u003cli\u003eMeasurement range (humidity): 0 ~ 100 % RH\u003c\/li\u003e \u003cli\u003eMeasurement range (temperature): -40 ~ + 80 ℃\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eBetter compatibility:\u003c\/strong\u003e\u003c\/li\u003e \u003cul\u003e \u003cli\u003eDigital output\u003c\/li\u003e \u003cli\u003eI²C interface\u003c\/li\u003e \u003c\/ul\u003e \u003cli\u003eFully calibrated\u003c\/li\u003e \u003cli\u003eExcellent long-term stability\u003c\/li\u003e \u003cli\u003eFast response and noise immunity\u003c\/li\u003e \u003cli\u003eWide voltage support: 2.5-5.5V DC\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eHVAC (heating, ventilation, and air conditioning)\u003c\/li\u003e \u003cli\u003eDehumidifier\u003c\/li\u003e \u003cli\u003eTest and inspection equipment\u003c\/li\u003e \u003cli\u003eEquipment\u003c\/li\u003e \u003cli\u003eConsumer goods\u003c\/li\u003e \u003cli\u003eAutomotive\u003c\/li\u003e \u003cli\u003eAutomatic control\u003c\/li\u003e \u003cli\u003eData logger\u003c\/li\u003e \u003cli\u003eWeather station\u003c\/li\u003e \u003cli\u003eHumidity control\u003c\/li\u003e \u003cli\u003eand other related temperature and humidity measurement and control projects\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e \u003ch3\u003e\u003cstrong\u003eComparison between DHT22, DHT20 and DHT11\u003c\/strong\u003e\u003c\/h3\u003e \u003ctable class=\"tg\" data-style=\"border-collapse: collapse; border-spacing: 0px; width: 638px; height: 314px;\"\u003e \u003ctbody\u003e \u003ctr data-style=\"height: 18px;\"\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; font-weight: bold; overflow: hidden; padding: 10px 5px; text-align: left; vertical-align: top; word-break: normal; border: 1px solid black; width: 226.281px; height: 18px;\"\u003e\u003cstrong\u003e\u003cspan data-style=\"font-weight: bold;\"\u003eSpecification\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 118.109px; height: 18px; text-align: center;\"\u003e\u003cspan\u003e\u003cstrong\u003eDHT22\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.297px; height: 18px; text-align: center;\"\u003e\u003cspan\u003e\u003cstrong\u003eDHT20 \u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.312px; height: 18px; text-align: center;\"\u003e\u003cspan\u003e\u003cstrong\u003eDHT11\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-style=\"height: 18px;\"\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; font-weight: bold; overflow: hidden; padding: 10px 5px; text-align: left; vertical-align: top; word-break: normal; border: 1px solid black; width: 226.281px; height: 18px;\"\u003e\u003cspan data-style=\"font-weight: bold;\"\u003eSupply voltage\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 118.109px; height: 18px; text-align: center;\"\u003e\u003cspan\u003eDC: 3.0 - 6.0 V\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.297px; height: 18px; text-align: center;\"\u003e\u003cspan\u003eDC: 2.0 – 5.5 V\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.312px; height: 18px; text-align: center;\"\u003e\u003cspan\u003eDC: 3.3 – 5.5 V\u003c\/span\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-style=\"height: 36px;\"\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; font-weight: bold; overflow: hidden; padding: 10px 5px; text-align: left; vertical-align: top; word-break: normal; border: 1px solid black; width: 226.281px; height: 36px;\"\u003e\u003cspan data-style=\"font-weight: bold;\"\u003eMeasurement range (temperature)\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 118.109px; height: 36px; text-align: center;\"\u003e\u003cspan\u003e-40 ~ + 80 ℃\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.297px; height: 36px; text-align: center;\"\u003e\u003cspan\u003e-40 ~ + 80 ℃\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.312px; height: 36px; text-align: center;\"\u003e\u003cspan\u003e-20 ~ + 60 ℃\u003c\/span\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-style=\"height: 18px;\"\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; font-weight: bold; overflow: hidden; padding: 10px 5px; text-align: left; vertical-align: top; word-break: normal; border: 1px solid black; width: 226.281px; height: 18px;\"\u003e\u003cspan data-style=\"font-weight: bold;\"\u003eMeasurement range (humidity)\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 118.109px; height: 18px; text-align: center;\"\u003e\u003cspan\u003e0 ~ 100 % relative humidity\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.297px; height: 18px; text-align: center;\"\u003e\u003cspan\u003e0 ~ 100 % relative humidity\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.312px; height: 18px; text-align: center;\"\u003e\u003cspan\u003e5 ~ 95 % relative humidity\u003c\/span\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-style=\"height: 18px;\"\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; font-weight: bold; overflow: hidden; padding: 10px 5px; text-align: left; vertical-align: top; word-break: normal; border: 1px solid black; width: 226.281px; height: 18px;\"\u003e\u003cspan data-style=\"font-weight: bold;\"\u003eTemperature accuracy\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 118.109px; height: 18px; text-align: center;\"\u003e\u003cspan\u003e± 0.5 ℃\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.297px; height: 18px; text-align: center;\"\u003e\u003cspan\u003e± 0.5 ℃\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.312px; height: 18px; text-align: center;\"\u003e\u003cspan\u003e± 1 ℃\u003c\/span\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-style=\"height: 36px;\"\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; font-weight: bold; overflow: hidden; padding: 10px 5px; text-align: left; vertical-align: top; word-break: normal; border: 1px solid black; width: 226.281px; height: 36px;\"\u003e\u003cspan data-style=\"font-weight: bold;\"\u003eHumidity accuracy\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 118.109px; height: 36px; text-align: center;\"\u003e\u003cspan\u003e± 2 % RH (25 ℃)\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.297px; height: 36px; text-align: center;\"\u003e\u003cspan\u003e± 3 % RH (25 ℃)\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #ffffff; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.312px; height: 36px; text-align: center;\"\u003e\u003cspan\u003e± 5 % RH (25 ℃)\u003c\/span\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-style=\"height: 18px;\"\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; font-weight: bold; overflow: hidden; padding: 10px 5px; text-align: left; vertical-align: top; word-break: normal; border: 1px solid black; width: 226.281px; height: 18px;\"\u003e\u003cspan data-style=\"font-weight: bold;\"\u003eOutput signal\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 118.109px; height: 18px; text-align: center;\"\u003e\u003cspan\u003eI2C signal\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.297px; height: 18px; text-align: center;\"\u003e\u003cspan\u003eI2C signal\u003c\/span\u003e\u003c\/td\u003e \u003ctd data-style=\"background-color: #f0f0f0; color: #2a2a2a; font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; vertical-align: middle; word-break: normal; border: 1px solid black; width: 124.312px; height: 18px; text-align: center;\"\u003e\u003cspan\u003e1-wire\u003c\/span\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch3\u003e\u003cstrong\u003eWhat is Grove?\u003c\/strong\u003e\u003c\/h3\u003e \u003cp\u003eGrove makes connecting and experimenting easier and simplifies the prototyping process. No jumpers or soldering are required. More than 300 Grove modules have been developed, covering a wide range of applications and meeting a variety of requirements. Not only the hardware but also the software is open source. For Grove users (especially beginners), instructional PDF documents and a wiki are provided. \u003c\/p\u003e \u003cp\u003eWe offer various Grove Shields to enable connections to the Grove system with various microcontrollers. \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eBill of materials\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e1x Grove - temperature and humidity sensor DHT20\u003c\/li\u003e \u003cli\u003e1x Grove cable\u003c\/li\u003e \u003c\/ul\u003e","brand":"Seeedstudio","offers":[{"title":"Default Title","offer_id":66045616259421,"sku":"F23106962","price":4.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/grove-temperatur-feuchtigkeitssensor-v20-dht20-funduino-4361824.jpg?v=1791489438"},{"product_id":"sht45-temperatur-und-luftfeuchtigkeitssensor-mit-qwiic-anschluss","title":"SHT45 temperature and humidity sensor - QWIIC, I2C, 2.4-5.5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital temperature and humidity sensor with I2C connection\u003c\/li\u003e \u003cli\u003eTemperature measurement range, -40 °C to +125 °C\u003c\/li\u003e \u003cli\u003eHumidity measurement range, 0 to 100 %\u003c\/li\u003e \u003cli\u003eAccuracy ±1.5 % relative humidity, ±0.2 °C temperature\u003c\/li\u003e \u003cli\u003eOperating voltage 2.4 to 5.5 V\u003c\/li\u003e \u003cli\u003eDimensions 4 * 4 mm with a surface-mount design\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis temperature and humidity sensor enables both measured values to be recorded simultaneously via a single I2C bus. This allows direct integration into circuits with multiple sensors without occupying additional connections. The sensor uses capacitive sensing elements and provides digitally calibrated values, eliminating the need for subsequent calibration.\u003c\/p\u003e \u003cp\u003eThe operating voltage of 2.4 to 5.5 V allows connection to both 3.3 V boards and 5 V controller boards. No AC voltages or special voltage converters are required. The high accuracy of ±1.5 % for humidity and ±0.2 °C for temperature enables reliable measurements in most applications without additional error correction.\u003c\/p\u003e \u003cp\u003eThe sensor is suitable for environmental monitoring in rooms, measurement enclosures, or weather stations up to approximately 5 * 5 meters in size. It can also be used in inventory management, where monitoring temperature and humidity is crucial, or in automated greenhouses. Its compact size allows it to be integrated into confined spaces.\u003c\/p\u003e \u003cp\u003eOperation requires a microcontroller or single-board computer with an I2C interface, as well as the appropriate software libraries for data evaluation. The power supply is provided by the operating circuit; a separate power supply is not required if the sensor is powered directly by the controller board.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe sensor must not be integrated into the household electrical circuit. It is intended exclusively for use in prototypes and testing and development projects. Work on or in the immediate vicinity of electrical installations may only be carried out by qualified electricians; if you have questions about correct use, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1* SHT45 temperature and humidity sensor with QWIIC connection\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045629792605,"sku":"F23107601","price":16.88,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/sht45-temperatur-und-luftfeuchtigkeitssensor-mit-qwiic-anschluss-funduino-7263031.png?v=1791489177"},{"product_id":"master-gy-sht30-d-gy-sht35-d-digitaler-temperatur-feuchtigkeitssensor","title":"GY-SHT3x-D temperature and humidity sensor - I2C, 2.15-5.5 V, various versions","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital temperature and humidity sensor with I2C interface\u003c\/li\u003e \u003cli\u003eTemperature measurement range: -40 to +125 °C\u003c\/li\u003e \u003cli\u003eHumidity measurement range: 0 to 100% relative humidity\u003c\/li\u003e \u003cli\u003eAccuracy: temperature ±0.2 °C, humidity ±1.5% in the optimal range\u003c\/li\u003e \u003cli\u003eOperating voltage: 2.15 to 5.5 V\u003c\/li\u003e \u003cli\u003eIntegrated ADC, calibrated before delivery\u003c\/li\u003e \u003cli\u003eCompact design with four connections\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis digital sensor simultaneously measures temperature and humidity via an I2C interface and outputs the readings digitally. The module operates in a range from -40 to +125 °C and measures humidity from 0 to 100%, with optimal accuracy in the medium temperature range. The integrated analog-to-digital converter is factory-calibrated, eliminating the need for recalibration.\u003c\/p\u003e \u003cp\u003eThe I2C connection allows multiple sensors to be connected in parallel on a single bus, saving microcontroller pins. The operating voltage of 2.15 to 5.5 V allows direct connection to boards with 3.3 V or 5 V logic levels. Power consumption in standby mode is well below 1 mA and typically below 5 mA during active operation.\u003c\/p\u003e \u003cp\u003eThe sensor is suitable for room climate control devices, weather stations, storage climate monitoring, and incubators. It is also used in portable environmental measurement projects. In automated systems, it can control heating and ventilation when temperature or humidity exceeds or falls below threshold values.\u003c\/p\u003e \u003cp\u003eA microcontroller or single-board computer with an I2C interface is required, along with pull-up resistors on the data lines if these are not already present on the carrier system. Power is supplied through the operating voltage inputs.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eWhen wiring, ensure that the power supply is connected with the correct polarity. The module is intended exclusively for building prototypes and for testing and development purposes; it is not intended for integration into household electrical installations. If you have questions about using it in mains-powered systems, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x GY-SHT3x-D digital temperature and humidity sensor\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"GY-SHT30-D","offer_id":66045636510045,"sku":"F23105735","price":4.1,"currency_code":"EUR","in_stock":false},{"title":"GY-SHT35-D","offer_id":66045737533789,"sku":"F23107585","price":9.67,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/master-gy-sht30-d-gy-sht35-d-digitaler-temperatur-feuchtigkeitssensor-funduino-6407680.png?v=1791497198"},{"product_id":"gy-213v-sht21-sensor-fur-temperatur-und-luftfeuchtigkeit-i2c","title":"SHT21 temperature sensor GY-213 V - humidity, I2C, 2.7-5.5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined temperature and humidity sensor with a digital I2C interface\u003c\/li\u003e \u003cli\u003eTemperature measurement range −40 to +125 °C, relative humidity 0 to 100%\u003c\/li\u003e \u003cli\u003eMeasurement accuracy ±2% relative humidity, ±0.3 °C in the mid-range\u003c\/li\u003e \u003cli\u003eOperating voltage 2.7 to 5.5 V, low-power on-demand measurement\u003c\/li\u003e \u003cli\u003e3-pin connection terminal with GND, VCC and SDA\/SCL for the I2C bus\u003c\/li\u003e \u003cli\u003eFactory calibration, integrated temperature compensation\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThe sensor measures temperature and humidity simultaneously via an I2C interface and transmits the readings digitally to connected microcontrollers or single-board computers. The device uses capacitive humidity measurement and a temperature sensor in the immediate vicinity to automatically correct the measurement data.\u003c\/p\u003e \u003cp\u003eUsing just two signal lines, multiple sensors can be connected to the same data bus without requiring additional control lines. This makes the sensor particularly space-saving in larger measurement networks. The readings are available after a short waiting period; calibration before use is not required.\u003c\/p\u003e \u003cp\u003eTypical applications include indoor climate control in buildings, storage monitoring under defined storage conditions, outdoor weather stations at ambient temperatures up to approximately 125 °C, as well as incubators and hatching machines with humidity control. The sensor also provides reliable data for control algorithms in laboratory automation and greenhouse control systems.\u003c\/p\u003e \u003cp\u003eThe operating voltage is between 2.7 and 5.5 V, allowing the sensor to be connected directly to standard logic levels (3.3 V or 5 V). Operation requires a microcontroller with I2C support and pull-up resistors on the signal lines if these are not already present on the mainboard. The measurement range limits use to environments below 125 °C; a specialized sensor is required for higher temperatures.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes. It is not intended for operation in power supply circuits or for installation in household electrical systems. Observe the operating voltage limits of 2.7 to 5.5 V and avoid electrostatic discharges during assembly; if you have questions about integration into larger systems, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x GY-213V, SHT21 - temperature and humidity sensor with I2C\u003c\/li\u003e \u003cli\u003e1x 4-pin header\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045640737117,"sku":"F23107082","price":11.37,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/gy-213v-sht21-sensor-fuer-temperatur-und-luftfeuchtigkeit-i2c-funduino-9961965.png?v=1791490904"},{"product_id":"scd40-sensor-fur-co2-temperatur-und-luftfeuchtigkeit","title":"SCD40 CO2 sensor - temperature and humidity, I2C","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined CO2, temperature, and humidity sensor\u003c\/li\u003e \u003cli\u003ePhotoacoustic NDIR measurement principle for CO2 measurement\u003c\/li\u003e \u003cli\u003eDigital I2C interface for connection to microcontrollers\u003c\/li\u003e \u003cli\u003eSupply voltage 2.4 to 5.5 V\u003c\/li\u003e \u003cli\u003eCO2 measurement range 400 to 2000 ppm\u003c\/li\u003e \u003cli\u003eIntegrated humidity and temperature sensors for signal correction\u003c\/li\u003e \u003cli\u003eLow power consumption during measurement\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis CO2 sensor measures the carbon dioxide content of the air using a photoacoustic method: the air is exposed to light, and the resulting pressure fluctuations are measured by an integrated microphone. At the same time, built-in sensors provide temperature and humidity readings, which are used to correct the CO2 measurement and are also available for your own evaluations.\u003c\/p\u003e \u003cp\u003eConnection is made via an I2C bus, allowing multiple sensors to be operated in parallel on a microcontroller with only four connection wires required. The supply voltage of 2.4 to 5.5 V enables connection to various controller boards without level shifting. After being switched on, the module requires a short time before it can be addressed on the bus.\u003c\/p\u003e \u003cp\u003eApplications include indoor air monitoring, such as checking air quality in offices or classrooms, ventilation controls that regulate the supply of fresh air based on demand, and self-built weather and environmental stations where all three measurements are to be recorded together.\u003c\/p\u003e \u003cp\u003eA microcontroller with an I2C interface and suitable connection wires are required. The sensor is supplied from the factory without any additional calibration and can begin retrieving measurement values immediately after startup.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes, not for installation in the household electrical circuit. When working on or near electrical installations, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x SCD40 sensor for CO2, temperature, and humidity\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045641294173,"sku":"F23107771","price":36.16,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/scd40-sensor-fuer-co2-temperatur-und-luftfeuchtigkeit-funduino-6337665.png?v=1791491397"},{"product_id":"grove-temperatur-und-feuchtigkeitssensor-dht11","title":"Grove DHT11 temperature and humidity sensor - digital, 3.3-5 V","description":"\u003cp\u003eGrove - Temperature and Humidity Sensor is based on DHT11, which offers high measurement accuracy and a wide range at a low cost. The upgraded version of DHT11 uses a capacitive sensor type and has a wider temperature and humidity measurement range than the old version. The temperature resolution is also higher.\u003c\/p\u003e \u003cp\u003eDHT11 is the most commonly used temperature and humidity module for Arduino and Raspberry Pi. Due to its many advantages, such as low power consumption and excellent long-term stability, it is widely popular among hardware enthusiasts. The single-bus digital signal is output via the integrated ADC, saving the controller board's I\/O resources.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eSave the controller board's I\/O resources: single-bus digital signal output via the integrated ADC\u003c\/li\u003e \u003cli\u003eHigh stability and low cost\u003c\/li\u003e \u003cli\u003eLong transmission distance and excellent long-term stability\u003c\/li\u003e \u003cli\u003eHumidity range: 5 to 95 % RH ±5 %\u003c\/li\u003e \u003cli\u003eTemperature range: -20 to 60 ℃ with ±2 %\u003c\/li\u003e \u003cli\u003eWeight: 10g\u003c\/li\u003e \u003cli\u003eInput voltage: 3.3 V and 5 V\u003c\/li\u003e \u003cli\u003eCurrent: 1.3 - 2.1 mA\u003c\/li\u003e \u003cli\u003eDimensions: 40x20x8mm\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePackage contents:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1x Grove - Temperature and Humidity Sensor (DHT11)\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eFurther information:\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003ca title=\"Datenblatt\" href=\"https:\/\/files.seeedstudio.com\/wiki\/Grove-TemperatureAndHumidity_Sensor\/res\/DHT11.pdf\"\u003ehttps:\/\/files.seeedstudio.com\/wiki\/Grove-TemperatureAndHumidity_Sensor\/res\/DHT11.pdf\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003ca title=\"Github - Grove_Temperature_And_Humidity_Sensor\" href=\"https:\/\/github.com\/Seeed-Studio\/Grove_Temperature_And_Humidity_Sensor\"\u003ehttps:\/\/github.com\/Seeed-Studio\/Grove_Temperature_And_Humidity_Sensor\u003c\/a\u003e\u003c\/p\u003e","brand":"Seeedstudio","offers":[{"title":"Default Title","offer_id":66045644407133,"sku":"F23106393","price":4.55,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/grove-temperatur-und-feuchtigkeitssensor-dht11-funduino-3031516.png?v=1791491597"},{"product_id":"am2120-temperatur-und-feuchtigkeitssensor-mit-jst-stecker","title":"AM2120 temperature and humidity sensor - JST connector, 1-Wire","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined temperature and humidity sensor for microcontrollers and single-board computers\u003c\/li\u003e \u003cli\u003eTemperature measurement range −40 to +80 °C, humidity 0 to 100% relative humidity\u003c\/li\u003e \u003cli\u003eDigital output via 1-Wire protocol, requiring only one data line\u003c\/li\u003e \u003cli\u003eJST connector for a secure connection\u003c\/li\u003e \u003cli\u003eCalibrated, accuracy ±2 °C and ±5% humidity\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis combined temperature and humidity sensor measures both parameters via a single data line according to the 1-Wire standard. The digital output signal can be read directly by microcontrollers such as Arduino, without requiring additional analog-to-digital converters. The JST connector enables a secure, polarization-safe connection that prevents incorrect connections.\u003c\/p\u003e \u003cp\u003eThe sensor operates via the 1-Wire protocol, in which all devices are connected to a single bus without requiring additional connection lines. This allows multiple sensors to be operated on a single data line of the controller board. The sensor is factory-calibrated, so adjustment before use is not required.\u003c\/p\u003e \u003cp\u003eThe device is suitable for indoor climate monitoring in offices and living spaces, greenhouse and storage management, cabinet and transport container monitoring, weather station projects, and data logger setups. A typical application is combining temperature warnings and humidity alarms at a single measuring point, for example to detect condensation or drying out.\u003c\/p\u003e \u003cp\u003eThe operating voltage range is between 3.0 and 5.5 V, so the sensor works with both 3.3 V and 5 V logic without additional level shifters. Operation requires a suitable controller board with 1-Wire support, as well as a compatible connection cable or pin header for the JST connector. The measurement accuracy of ±2 °C and ±5% relative humidity is sufficient for general environmental monitoring, but the sensor is unsuitable for process and laboratory applications with higher accuracy requirements.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe device is intended exclusively for building prototypes and for testing and development purposes. It must not be installed in household mains circuits. Work on or near household electrical installations must be carried out by qualified electricians; if in doubt, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x AM2120 temperature and humidity sensor with JST connector\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045645848925,"sku":"F23107861","price":7.03,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/am2120-temperatur-und-feuchtigkeitssensor-mit-jst-stecker-funduino-5993155.png?v=1791490685"},{"product_id":"amt1001-luftfeuchtigkeitssensor-und-temperatursensor","title":"AMT1001 humidity sensor - with temperature measurement, I2C","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined humidity and temperature sensor\u003c\/li\u003e \u003cli\u003eTemperature measurement range -40 to +125 °C\u003c\/li\u003e \u003cli\u003eHumidity measurement range 0 to 100% relative humidity\u003c\/li\u003e \u003cli\u003eAccuracy ±3% for humidity, ±0.5 °C for temperature\u003c\/li\u003e \u003cli\u003eDigital output via I2C bus\u003c\/li\u003e \u003cli\u003eCompact DIP8 design with 4 connection-pin variants\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThe AMT1001 combines temperature and humidity measurement in a single sensor and is suitable for monitoring applications in storage areas, climate control systems, and IoT projects. The module records both measured values simultaneously and outputs them digitally via the I2C bus, allowing multiple sensors to be connected to a shared bus system and reducing the number of required connection wires.\u003c\/p\u003e \u003cp\u003eThe sensor operates in a temperature range of -40 to +125 °C with an accuracy of ±0.5 °C. Humidity measurement covers the complete range from 0 to 100% relative humidity and achieves an accuracy of ±3%. Particularly in storage management and climate control, where humidity and temperature are closely related, the combined device saves space and wiring compared with two separate modules.\u003c\/p\u003e \u003cp\u003eTypical applications include data loggers for storage monitoring, for example a system that continuously monitors storage areas and reports deviations, as well as monitoring control cabinets, greenhouses, and outdoor air monitoring stations. The device can also be integrated into portable environmental measuring devices or smart home control systems.\u003c\/p\u003e \u003cp\u003eThe sensor is connected to a microcontroller with an I2C interface (SDA and SCL), and the power supply operates at 3.3 or 5 V. The DIP8 design with four possible connection-pin variants provides flexibility during assembly but requires attention to ensure correct wiring. The module is not suitable for measurement tasks above +125 °C or below -40 °C.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes, not for installation in household mains circuits or devices with mains voltage. Ensure correct wiring according to the pin assignment to prevent damage caused by reversed polarity. Work on or near electrical installations must be carried out by qualified electricians; if anything is unclear, consult a qualified electrician before commissioning.\u003c\/p\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045647847773,"sku":"F23108235","price":4.44,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/amt1001-luftfeuchtigkeitssensor-und-temperatursensor-funduino-2440012.png?v=1791491030"},{"product_id":"am2301a-dht21-digitaler-temperatur-feuchtigkeitssensor","title":"AM2301 A temperature and humidity sensor - DHT21, -40 to 80 °C, 3.3-5.5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined temperature and humidity sensor with digital output\u003c\/li\u003e \u003cli\u003eTemperature measurement range: -40 °C to +80 °C\u003c\/li\u003e \u003cli\u003eHumidity measurement range: 0 to 100 percent relative humidity\u003c\/li\u003e \u003cli\u003eAccuracy: ±0.5 °C and ±2 percent humidity\u003c\/li\u003e \u003cli\u003eConnection via 1-Wire protocol, four connections required\u003c\/li\u003e \u003cli\u003eOperating voltage: 3.3 to 5.5 V\u003c\/li\u003e \u003cli\u003eFactory-calibrated, raw calibration data available\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis temperature and humidity sensor measures both values in a single housing and outputs the readings digitally. The 1-Wire protocol enables easy integration into measurement setups, but requires four separate connection lines for the power supply, ground, data line, and a spare connection. The operating voltage of 3.3 to 5.5 V is compatible with common microcontroller boards without additional voltage regulators.\u003c\/p\u003e \u003cp\u003eThe measurement accuracy of ±0.5 °C for temperature and ±2 percent for humidity enables reliable monitoring even in demanding applications. The measurement range of -40 to +80 °C covers exceptionally cold environments, making the sensor suitable for outdoor measurements in winter regions, while the humidity range of 0 to 100 percent covers all common application areas. Since the sensor is factory-calibrated, adjustment before use is not required. The raw calibration data is available for applications with special requirements.\u003c\/p\u003e \u003cp\u003eTypical applications include environmental monitoring in living spaces, warehouses, and greenhouses. The sensor reliably reports humidity values even at extreme temperatures, making it suitable for monitoring cold chains or outdoor storage areas. In humidity measurement networks with multiple sensors, the devices can be connected in series because the 1-Wire protocol allows multiple modules to operate on a single line.\u003c\/p\u003e \u003cp\u003eOperation requires a microcontroller that supports the 1-Wire protocol or provides a library for it. The four required connections must be taken into account during setup, particularly where space is limited. Depending on the installation location, protection against moisture is required because the housing itself is not waterproof.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for prototype construction and testing and development purposes and is not suitable for installation in household electrical circuits. Work on or near electrical installations must be carried out by qualified electricians. When operating in damp environments, consult a qualified electrician before commissioning to ensure contact resistance and insulation safety.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1 x AM2301A \/ DHT21 temperature \u0026amp; humidity sensor\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045649125725,"sku":"F23107926","price":5.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/am2301a-dht21-digitaler-temperatur-feuchtigkeitssensor-funduino-8466616.jpg?v=1791492024"},{"product_id":"gy-213v-htu21d-temperatur-und-feuchtigkeitssensormodul-i2c","title":"HTU21D Temperature and Humidity Sensor - GY-213 V, I2C, 3.3 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined temperature and humidity sensor for ambient measurements\u003c\/li\u003e \u003cli\u003eI2C interface, multiple modules can be used on one bus\u003c\/li\u003e \u003cli\u003eTemperature measuring range -40 to +125 °C, humidity 0–100 %\u003c\/li\u003e \u003cli\u003eTemperature accuracy ±2 °C, humidity ±3 %\u003c\/li\u003e \u003cli\u003eOperating voltage 3.3 V, low power consumption\u003c\/li\u003e \u003cli\u003eSmall SMD design on a carrier board with pin headers\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe sensor simultaneously measures the temperature and relative humidity of the surrounding air. The measurements are transmitted to a microcontroller board via the I2C bus, allowing multiple of these modules to be operated on a single line and thereby saving connections.\u003c\/p\u003e \u003cp\u003eFunctionally, the sensor uses capacitive and resistance-based sensing elements, whose changes are converted into digital values. Since the operating voltage is 3.3 V, the module connects directly to corresponding boards; a level shifter is required for 5 V boards. Current consumption is in the milliampere range and therefore has little impact even in battery-powered applications.\u003c\/p\u003e \u003cp\u003eTypical applications include climate monitoring systems in warehouses and rooms, data logging for research projects, and controlling ventilation or humidification. The sensor is also suitable for portable devices or sensor networks because its small design requires little space. On-site calibration is not necessary; the accuracy of ±2 °C and ±3 % is sufficient for most prototypes and development tasks.\u003c\/p\u003e \u003cp\u003eThe sensor is supplied with pre-soldered pin headers and can be plugged directly into a breadboard or carrier board. In addition to the 3.3 V power supply, only an I2C software library or a corresponding programming template for the target board is required.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe sensor is intended exclusively for installation in prototypes and for testing and development purposes. Work on or near household electrical installations is reserved for qualified electricians; if you are unsure about integrating it into existing systems, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003ePackage Contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x GY-213V HTU21D temperature and humidity sensor module, I2C\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045650534749,"sku":"F23106277","price":4.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/gy-213v-htu21d-temperatur-und-feuchtigkeitssensormodul-i2c-funduino-7136297.png?v=1791490768"},{"product_id":"sht35-temperatur-und-feuchtigkeitssensor-mit-i2c","title":"SHT35 temperature and humidity sensor - I2C, 2.4-5.5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital sensor for simultaneously measuring temperature and humidity\u003c\/li\u003e \u003cli\u003eTemperature measurement range –10 °C to +85 °C\u003c\/li\u003e \u003cli\u003eHumidity measurement range 0 % to 100 %\u003c\/li\u003e \u003cli\u003eTemperature accuracy ±0.2 °C\u003c\/li\u003e \u003cli\u003eHumidity accuracy ±1.5 %\u003c\/li\u003e \u003cli\u003eCommunication via I2C bus\u003c\/li\u003e \u003cli\u003eOperating voltage 2.4 V to 5.5 V\u003c\/li\u003e \u003cli\u003eCeramic sensing element design for stable long-term measurements\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis temperature and humidity sensor uses the I2C interface to provide digital output of its measurement values. The sensor measures both parameters simultaneously and provides raw values that are processed by the connected controller. The ceramic sensing element ensures stable measurements over long periods without requiring calibration.\u003c\/p\u003e \u003cp\u003eThe operating voltage of 2.4 V to 5.5 V enables operation with different power supplies; a level shifter is not required for 3.3 V systems. I2C communication allows multiple sensors to be connected to a shared bus, thereby saving controller pins. With measurement accuracies of ±0.2 °C for temperature and ±1.5 % for humidity, the sensor is suitable for applications requiring precise measurements in the medium-accuracy range.\u003c\/p\u003e \u003cp\u003eThe temperature measurement range of –10 °C to +85 °C covers typical indoor applications, such as climate monitoring in offices or warehouses. The sensor can also be used in weather test facilities or for monitoring device temperatures in electronic systems. Its humidity measurement range of 0 % to 100 % makes it versatile for monitoring applications without requiring special humidity limits to be observed.\u003c\/p\u003e \u003cp\u003eThe sensor is supplied without a power supply; an external voltage source must be provided. Pull-up resistors in the kiloohm range may be required on the I2C bus if they are not already provided by the controller system being used.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe sensor is intended exclusively for building prototypes and for testing and development purposes and is not suitable for installation in household mains circuits. When commissioning it with your own power supplies, the voltage limits must be observed to prevent damage. Work on or near electrical installations must be carried out by qualified electricians; if in doubt, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x SHT35 temperature and humidity sensor with I2C\u003c\/li\u003e \u003cli\u003e1x 90° 4-pin connector for soldering\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045654991197,"sku":"F23106590","price":19.28,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/sht35-temperatur-und-feuchtigkeitssensor-mit-i2c-funduino-7355683.png?v=1791490815"},{"product_id":"ultraschall-luftbefeuchter-12v-nebelmaschine-d25mm","title":"Ultrasonic air humidifier 12 V - mist maker, Ø 25 mm, 60 ml\/h","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eUltrasonic fogger for 12 V power supply\u003c\/li\u003e \u003cli\u003eGenerates a fine water mist through piezoelectric membrane vibrations\u003c\/li\u003e \u003cli\u003eOutput of up to 60 ml\/h at a frequency of 105 kHz\u003c\/li\u003e \u003cli\u003eConnection via two-wire cable without a plug\u003c\/li\u003e \u003cli\u003eReplaceable 25 mm diameter atomizer element\u003c\/li\u003e \u003cli\u003eOperates directly on DC voltage; no power supply required\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis ultrasonic fogger generates a fine water mist through high-frequency membrane vibrations and operates directly on 12 V DC. It uses piezoelectric vibrations at 105 kHz to atomize water on the surface of the fogger head into droplets. A piezoelectric membrane oscillates at high frequency, breaking up the surface tension of the water.\u003c\/p\u003e \u003cp\u003eThe fogger produces up to 60 ml\/h of water mist and is suitable for humidification tasks in small and medium-sized rooms as well as for demonstration purposes. The 25 mm diameter atomizer head can be replaced if the membrane insert becomes worn or contaminated. The two-wire connection without a pre-fitted plug requires a suitable power supply but can be flexibly adapted to various 12 V sources.\u003c\/p\u003e \u003cp\u003eTypical applications include air humidification in terrariums and aquarium exhaust systems, generating theatrical fog effects in smaller scenes, or evaporative cooling in display cases. It is also suitable for simple prototypes of humidification controls. Its use is limited by the output rate; rooms larger than approximately 30 to 50 cubic meters cannot be humidified efficiently with this device. Water consumed must be replenished regularly, and the element must be cleaned of deposits.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis device is intended exclusively for building prototypes and for testing and development purposes and is not designed for operation on household electrical circuits. Ensure that the 12 V power supply is connected with the correct polarity to prevent damage. In case of contact with the power supply or any uncertainty before operation, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Ultrasonic air humidifier \/ fogger with wire \u0026amp; sealing ring, 1.70 MHz, D25mm\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045656465757,"sku":"F23107586","price":2.42,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/ultraschall-luftbefeuchter-12v-nebelmaschine-d25mm-funduino-6678876.jpg?v=1791492285"},{"product_id":"sht20-temperatur-und-feuchtigkeitssensor-digital-i2c-sehr-prazise","title":"SHT20 Temperature and Humidity Sensor - I2C, 2.4-5.5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eMeasures temperature and humidity simultaneously, with digital evaluation\u003c\/li\u003e \u003cli\u003eTemperature measurement range −40 °C to +125 °C, humidity 0 to 100% RH\u003c\/li\u003e \u003cli\u003eAccuracy ±2% for humidity, ±0.3 °C for temperature\u003c\/li\u003e \u003cli\u003eI2C interface, addressable, multiple sensors on one bus\u003c\/li\u003e \u003cli\u003ePower supply 2.4 to 5.5 V, standby current below 1 µA\u003c\/li\u003e \u003cli\u003eSMD package with four contacts, compact design\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe SHT20 is a combined temperature and humidity sensor with a digital interface for prototype and test setups. It records both parameters simultaneously and outputs the measured values via the I2C bus, requiring only two signal lines plus power.\u003c\/p\u003e \u003cp\u003eThe operating principle uses capacitive measuring elements for humidity and a temperature-sensing element. The sensor calibrates itself internally, so no external adjustment is required. Multiple SHT20 modules can be connected in parallel to the same I2C bus without occupying additional connection pins.\u003c\/p\u003e \u003cp\u003eTypical applications range from climate monitoring in rooms or storage areas and humidity and temperature control in laboratory or incubation setups to fault detection in electronic devices. The wide temperature range of −40 to +125 °C also allows use under more extreme conditions. In practice, the sensor has proven useful for monitoring greenhouses or warning of condensation in temperature-controlled systems.\u003c\/p\u003e \u003cp\u003ePower is supplied directly from the microcontroller board within a voltage range of 2.4 to 5.5 V, eliminating the need for a separate power supply. Since the sensor is designed for the I2C standard, it works with common development platforms; if required, a pull-up resistor of approximately 10 kΩ per signal line is recommended. An analog-to-digital converter is required for direct pulse measurements or analog evaluation.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe sensor is not intended for installation in the household electrical circuit and is intended exclusively for building prototypes and for testing and development purposes. Work on or immediately adjacent to household electrical installations requires a qualified electrician; consult a qualified electrician if you have any questions before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x SHT20 temperature and humidity sensor - digital, I2C, highly precise\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045660004701,"sku":"F23109129","price":6.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/sht20-temperatur-und-feuchtigkeitssensor-digital-i2c-sehr-praezise-funduino-9043253.png?v=1791491282"},{"product_id":"sht40-temperatur-feuchtigkeitssensor-mit-2x-i-c-schnittstelle","title":"SHT40 temperature and humidity sensor - I²C, 2.4-5.5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined temperature and humidity sensor with digital I2C interface\u003c\/li\u003e \u003cli\u003eTemperature measurement range −40 to +125 °C, humidity 0 to 100% RH\u003c\/li\u003e \u003cli\u003eAccuracy ±1.5% humidity, ±0.2 °C temperature\u003c\/li\u003e \u003cli\u003eMaximum operating current consumption 0.8 mA\u003c\/li\u003e \u003cli\u003eOperating voltage 2.4 to 5.5 V\u003c\/li\u003e \u003cli\u003eAddressable; multiple sensors can be operated on the same I2C bus\u003c\/li\u003e \u003cli\u003eSMD design, 2*2 mm footprint\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe sensor measures temperature and relative humidity in a single component and outputs the measured values via I2C. The device operates in a measurement range of −40 to +125 °C for temperature and 0 to 100% for humidity, with accuracies of ±0.2 °C and ±1.5%, respectively. The I2C interface enables direct connection to microcontroller boards and computers with a corresponding bus.\u003c\/p\u003e \u003cp\u003eThe I2C address can be selected, allowing multiple sensors to be operated in parallel on a single bus and thereby saving connection pins. The operating voltage of 2.4 to 5.5 V allows use with 3.3 V or 5 V logic. Power consumption remains low at a maximum of 0.8 mA, even during continuous operation.\u003c\/p\u003e \u003cp\u003eThe sensor is suitable for indoor climate monitoring, storage condition monitoring, incubators and greenhouses, as well as portable and mains-powered measuring instruments. In practice, it can be used to build a data logger for long-term monitoring of storage temperature and humidity without requiring recalibration.\u003c\/p\u003e \u003cp\u003eConnection is made via four wires (power supply, ground, SCL data line and SDA data line). When operating with 3.3 V on 5 V logic, a level shifter is required. The SMD design requires experience with reflow soldering or mounting on a carrier module.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe sensor is intended exclusively for building prototypes and for testing and development purposes and is not suitable for installation in household mains circuits. If you have questions about the power supply or connection to existing systems, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x SHT40 temperature \u0026amp; humidity sensor with 2x I²C interface\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045660922205,"sku":"F23107577","price":5.6,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/sht40-temperatur-feuchtigkeitssensor-mit-2x-i2c-schnittstelle-funduino-1384653.jpg?v=1791491295"},{"product_id":"temperatur-feuchtigkeitssensor-sht31","title":"SHT31 Temperature and Humidity Sensor - I2C, -40 to +125 °C","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital combined sensor for temperature and humidity\u003c\/li\u003e \u003cli\u003eTemperature measurement range -40 to +125 °C, humidity 0 to 100% relative humidity\u003c\/li\u003e \u003cli\u003eAccuracy of ±2% RH and ±0.2 °C across wide measurement ranges\u003c\/li\u003e \u003cli\u003eI2C interface, two selectable addresses for addressing multiple sensors\u003c\/li\u003e \u003cli\u003eTypical current consumption of 0.4 mA in measurement mode, minimum 1.6 µA in sleep mode\u003c\/li\u003e \u003cli\u003eNo external calibration required; the sensor maintains its calibration over its service life\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis temperature and humidity sensor simultaneously measures two environmental parameters via an I2C interface. The measurement module provides access to precise data for climate monitoring and control applications without requiring multiple sensors to be connected.\u003c\/p\u003e \u003cp\u003eThe sensor measures humidity using capacitive sensing and temperature using the resistance thermometer principle. Its high accuracy of ±2% RH and ±0.2 °C enables precise control applications. With two programmable addresses, multiple sensors can be connected in parallel to an I2C bus without requiring additional control lines. The very low power consumption also makes the module suitable for long-term, battery-powered measurements.\u003c\/p\u003e \u003cp\u003eIn an in-vehicle climate logger, the sensor records both parameters simultaneously and stores them on an SD card. In grow box controllers, it automatically regulates ventilation and humidification. It also provides reliable data for refrigerated transport vehicles or warehouses where temperature and humidity need to be monitored. It is likewise suitable for portable measurement stations or development boards used for prototyping.\u003c\/p\u003e \u003cp\u003eOperation requires a power supply between 2.7 and 5.5 V, which is provided by many microcontroller boards. No level shifter is required for connection to 5 V logic systems with I2C, as the sensor tolerates the higher voltage. When positioning the sensor on the board, sufficient distance from heat sources should be maintained to avoid measurement deviations caused by self-heating.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for prototyping, testing, and development purposes and is not suitable for installation in household electrical circuits. Ensure correct polarity and secure connections during installation. Questions regarding integration into power supply systems or use outside test setups should be clarified with a qualified electrician.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x SHT31 temperature and humidity sensor\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045663215965,"sku":"F23107572","price":4.6,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/temperatur-feuchtigkeitssensor-sht31-funduino-3666817.png?v=1791491349"},{"product_id":"dht-22-auf-platine-mit-anschlusskabel","title":"DHT22 temperature sensor - humidity, -40 to +80 °C, with cable","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined temperature and humidity sensor for digital applications\u003c\/li\u003e \u003cli\u003eTemperature measurement range, −40 °C to +80 °C\u003c\/li\u003e \u003cli\u003eHumidity measurement range, 0 % to 100 % relative humidity\u003c\/li\u003e \u003cli\u003eAccuracy of ±0.5 °C and ±2 % humidity\u003c\/li\u003e \u003cli\u003eDigital output via single-wire protocol\u003c\/li\u003e \u003cli\u003eWith connection cable and resistor network on the circuit board\u003c\/li\u003e \u003cli\u003eTypical polling rate approximately every two seconds\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis temperature and humidity sensor measures two parameters simultaneously and outputs the values digitally. The single-wire protocol enables connection to microcontroller boards using just one signal pin; the integrated resistor network on the circuit board eliminates the need for additional components. The included cable allows use without soldering.\u003c\/p\u003e \u003cp\u003eThe sensor measures temperatures from −40 °C to +80 °C and humidity between 0 % and 100 % with an accuracy of ±0.5 °C and ±2 %, respectively. The measured values are available approximately every two seconds. The low current consumption in the low milliampere range is suitable for battery-powered applications.\u003c\/p\u003e \u003cp\u003eApplications include climate monitoring in rooms, greenhouses or warehouses, outdoor weather stations, humidity logging in transport boxes, and monitoring storage conditions for sensitive materials. The sensor is particularly popular in hobby projects involving air quality and environmental monitoring, as the combination of ease of use and acceptable accuracy offers good value for money.\u003c\/p\u003e \u003cp\u003eThe sensor requires an operating voltage of 3.3 V to 5.5 V. For long-term measurements lasting many hours, a stable power supply is recommended; when operating on batteries, the polling rate should be reduced as needed. Digital interfaces to other components require level shifting if the microcontroller uses 3.3 V logic while the power supply provides 5 V.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThe sensor is not intended for installation in household electrical circuits and may only be used for building prototypes and for testing and development purposes. Direct contact with the sensor during measurement is not critical; when working on or near the power supply, consult a qualified electrician if you are unsure.\u003c\/p\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045663936861,"sku":"F23106288","price":8.85,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/dht-22-auf-platine-mit-anschlusskabel-funduino-5107150.png?v=1791492769"},{"product_id":"wasserdampfsensor-regensensor-mit-jst-xh2-54-3p-buchse","title":"Capacitive rain sensor - 2.5-5.5 V, JST-XH2.54 3-pin","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eRain sensor for detecting water vapor and changes in humidity\u003c\/li\u003e \u003cli\u003eCapacitive sensor with detection area made from a copper trace\u003c\/li\u003e \u003cli\u003eJST-XH2.54 connector (3-pin) for easy connection\u003c\/li\u003e \u003cli\u003eOperating voltage 2.5 to 5.5 V, compatible with 3.3-V and 5-V systems\u003c\/li\u003e \u003cli\u003eDigital switching output (HIGH when moisture is detected)\u003c\/li\u003e \u003cli\u003eContinuously adjustable input sensitivity\u003c\/li\u003e \u003cli\u003eSensor area coated to prevent oxidation\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe rain sensor operates according to the capacitive measurement principle and detects water vapor and changes in humidity on its conductive trace area. A digital output signals detection to connected control systems. The integrated JST-XH2.54 connector enables immediate connection without soldering.\u003c\/p\u003e \u003cp\u003eThe sensing element consists of a copper trace applied to the circuit board, whose capacitance changes when it comes into contact with water or high humidity. The sensor operates with supply voltages between 2.5 and 5.5 V and can therefore be connected directly to 3.3-V or 5-V microcontroller boards. The sensitivity can be adjusted using a potentiometer without requiring recalibration.\u003c\/p\u003e \u003cp\u003eApplications include rain detection for automated skylights or awnings, humidity measurement in greenhouses and breeding facilities, and condensation detection in storage or warehouse containers. The sensor is also used in test and prototype setups for environmental monitoring, where simple digital signals are sufficient to trigger switching operations.\u003c\/p\u003e \u003cp\u003eThe three-pin JST XH2.54 connector carries the supply voltage, ground, and digital signal. Additional driver circuits are required if the sensor output is to control loads with higher current requirements. The sensor area should be kept free of dirt, as dust impairs moisture detection.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe module is designed for use in development and testing as a component of homemade circuits, not for use in household electrical circuits or permanent installations. Observe the correct polarity of the JST connector and avoid voltages above 5.5 V to prevent damage. When working on electrical systems, consult a qualified electrician before installation or commissioning if there are any uncertainties regarding electromagnetic compatibility or environmental protection.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x water vapor sensor \/ rain sensor with JST XH2.54 3P socket\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045664657757,"sku":"F23106307","price":3.4,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/wasserdampfsensor-regensensor-mit-jst-xh254-3p-buchse-funduino-7526964.png?v=1791492185"},{"product_id":"aht25-temperatur-feuchtigkeitssensor-1-27mm","title":"AHT25 temperature and humidity sensor - I2C, 2.7-5.5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital temperature and humidity sensor with I2C interface\u003c\/li\u003e \u003cli\u003eTemperature measurement range -40 to +85 °C, humidity 0 to 100% RH\u003c\/li\u003e \u003cli\u003eAccuracy of ±0.3 °C and ±2% RH across the operating range\u003c\/li\u003e \u003cli\u003eOperating voltage 2.7 to 5.5 V, low-power measurement\u003c\/li\u003e \u003cli\u003eCompact module with a length of 27 mm for space-saving integration\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe sensor simultaneously measures temperature and relative humidity and provides the readings via I2C. This allows multiple modules to be connected to the same bus using only two data lines, saving pins on the microcontroller. The operating voltage of 2.7 to 5.5 V allows direct operation with most common controller boards without additional voltage converters, whether using 3.3 V or 5 V logic levels.\u003c\/p\u003e \u003cp\u003eThe measurement process provides digitally processed values directly from the module, eliminating analog-to-digital conversions in the main program. The measurement accuracy of ±0.3 °C and ±2% RH is sufficient for monitoring and control tasks involving room climate, storage, and production processes. Power consumption is in the microwatt range in sleep mode, making the module interesting for battery-powered data loggers.\u003c\/p\u003e \u003cp\u003eTypical applications include climate monitoring systems in rooms or vehicles, humidity-controlled ventilation, storage monitoring for temperature- and humidity-sensitive materials, and greenhouse automation. In smaller projects, the module replaces two separate sensors, thereby reducing wiring effort and costs.\u003c\/p\u003e \u003cp\u003eA microcontroller or single-board computer with an I2C bus is required; common platforms are supported by libraries. The module requires two pull-up resistors on the data lines if they are not already present on the controller board. A complete power supply must be provided separately.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes and is not suitable for installation in the household electrical circuit. Work on or near electrical installations must be carried out by qualified electricians; if anything is unclear, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x AHT25 temperature \u0026amp; humidity sensor\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045666263389,"sku":"F23107653","price":3.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/aht25-temperatur-feuchtigkeitssensor-127mm-funduino-6906357.png?v=1791491064"},{"product_id":"dht11-temperatur-und-feuchtigkeitssensor-mit-xh2-54-buchse","title":"DHT11 Temperature and Humidity Sensor - XH2.54, 3,3-5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital temperature and humidity sensor for microcontrollers\u003c\/li\u003e \u003cli\u003eTemperature measuring range 0–50 °C, humidity 20–80% RH\u003c\/li\u003e \u003cli\u003eAccuracy ±2 °C and ±5% RH\u003c\/li\u003e \u003cli\u003eDigital output via single-wire protocol\u003c\/li\u003e \u003cli\u003eOperating voltage 3.3–5 V\u003c\/li\u003e \u003cli\u003eConnection with XH2.54 connector, three wires required\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis temperature and humidity sensor measures two parameters simultaneously and transmits the values digitally to microcontrollers. The single-wire protocol requires only one signal line, keeping wiring to a minimum; in addition to power and ground, a single data pin is sufficient.\u003c\/p\u003e \u003cp\u003eMeasurement accuracy is ±2 °C for temperature and ±5% for relative humidity. The temperature measuring range of 0–50 °C covers indoor environments and many technical applications, but not high-temperature or extreme-cold environments. The humidity measurement reliably covers 20–80% relative humidity; outside this range, the sensor no longer provides accurate readings.\u003c\/p\u003e \u003cp\u003eThe sensor is suitable for indoor climate measurements, greenhouse monitoring, storage monitoring, and consumer devices such as digital hygrometers. It also performs reliably in automation projects that depend on cost-effective sensor data. A typical application is monitoring storage conditions, where temperature and humidity are continuously recorded and evaluated, for example to trigger threshold conditions and issue warnings.\u003c\/p\u003e \u003cp\u003eThe XH2.54 connector enables secure connections without soldering. Operation requires a microcontroller with a free digital input; control is performed using libraries for common platforms. The sensor operates at voltages between 3.3 and 5 V, and level shifters are not required. Measurements can be taken every second; the protocol is not designed for faster operation.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThe sensor is not intended for use in household electrical installations. This module is intended exclusively for building prototypes and for testing and development purposes. Before working on or in the immediate vicinity of an electrical installation, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x DHT11 - temperature and humidity sensor on a circuit board\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045679796573,"sku":"F23108982","price":8.58,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/dht11-temperatur-und-feuchtigkeitssensor-mit-xh254-buchse-funduino-4448767.jpg?v=1791492604"},{"product_id":"bme680-4-in-1sensor-modul-temperatur-luftfeuchtigkeit-luftdruck-gas-arduino-kompatibel","title":"BME680 sensor module - temperature, humidity, air pressure, gas, 3.3-5.5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e4-in-1 sensor for temperature, humidity, air pressure, and volatile organic compounds\u003c\/li\u003e \u003cli\u003eI2C or SPI interface, address selection via solder bridge for I2C\u003c\/li\u003e \u003cli\u003eOperating voltage 3.3 V to 5.5 V\u003c\/li\u003e \u003cli\u003ePin header already soldered\u003c\/li\u003e \u003cli\u003eGas measurement using a heated metal oxide layer\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis 4-in-1 sensor simultaneously measures temperature, humidity, air pressure, and the concentration of volatile organic compounds in the air. The module communicates via an I2C or SPI interface, with the I2C address set to 0*76 or 0*77 using a solder bridge on the SDO pin. In SPI mode, this pin is used for chip selection. The voltage range from 3.3 V to 5.5 V makes the module compatible with a wide range of development platforms without requiring level shifters.\u003c\/p\u003e \u003cp\u003eThe gas measurement uses a small heating structure that activates a metal oxide layer. When volatile organic compounds are present in the surrounding environment, the electrical resistance of this layer changes measurably. The module uses this resistance to calculate an air quality value. The pressure, humidity, and temperature sensors operate as separate elements, with their readings used in software to compensate for one another. This keeps accuracy stable across wide temperature and humidity ranges.\u003c\/p\u003e \u003cp\u003eThe module is suitable for stationary weather stations, continuous indoor climate monitoring in smart home systems, or applications that monitor indoor air quality. The air pressure sensor can also be used to estimate altitude. Only a few connecting wires are needed to integrate it into prototypes and test setups.\u003c\/p\u003e \u003cp\u003eOperation requires a microcontroller board with I2C or SPI support. The soldered pin header enables direct plug-in connections, while assembly on perfboard is also possible. Common libraries for Arduino and other popular development environments already support the module.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for prototyping as well as testing and development purposes. It must not be integrated into household electrical installations or mains-voltage circuits. When working on or near power lines, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cp\u003e1x 4-in-1 sensor module BME680 - temperature, humidity, air pressure \u0026amp; gas (Arduino-compatible)\u003c\/p\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045680222557,"sku":"F23107534","price":14.63,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/bme680-4-in-1sensor-modul-temperatur-luftfeuchtigkeit-luftdruck-gas-arduino-kompatibel-funduino-9501121.jpg?v=1791491961"},{"product_id":"ccs811-hdc1080-kohlendioxid-co2-temperatur-und-feuchtigkeitssensor-vocs","title":"CCS811 HDC1080 sensor module - CO2, temperature, humidity, I2C","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCombined sensor module for measuring carbon dioxide concentration, temperature, and relative humidity\u003c\/li\u003e \u003cli\u003eOutput via I2C bus; multiple modules can be connected using two pins\u003c\/li\u003e \u003cli\u003eCO2 measuring range: 400 to 8192 ppm\u003c\/li\u003e \u003cli\u003eTemperature measuring range: −25 °C to 85 °C\u003c\/li\u003e \u003cli\u003eRelative humidity: 0 to 100 percent\u003c\/li\u003e \u003cli\u003ePower supply: 1.8 to 3.6 V, operating current approximately 25 mA in measurement mode\u003c\/li\u003e \u003cli\u003eOperating temperature: 0 °C to 50 °C\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis sensor module combines a carbon dioxide gas sensor with a temperature and humidity sensor on a single circuit board. It communicates via I2C, allowing multiple modules to be operated in parallel on a single sensor bus without occupying additional connections. The module is powered by 1.8 to 3.6 V, making it suitable for battery-powered portable devices.\u003c\/p\u003e \u003cp\u003eThe carbon dioxide measuring element uses an absorption principle and operates in the range of 400 to 8192 ppm, covering typical indoor air quality. Temperature and humidity are measured simultaneously, with resolution in tenths. The operating current during measurement remains below 25 milliamps, which should be taken into account for extended wireless use.\u003c\/p\u003e \u003cp\u003eIn practical applications, the module can be used for indoor climate measurements, for example to trigger ventilation intervals or monitor air quality in offices. It can also be used in portable measuring devices for monitoring personal surroundings. The gas sensor requires several minutes after power-on to produce stable readings, a known effect of this measuring method.\u003c\/p\u003e \u003cp\u003eThe module requires a microcontroller board with an I2C interface and an operating voltage of at least 1.8 V. The SDA and SCL communication lines are connected directly to the board; if its voltage level is above 3.6 V, a level shifter is required. External power sources between 1.8 and 3.6 V are suitable for powering the module; voltages outside this range will damage the module. Humidity measurements become less accurate at relative values above 95 percent, and the module should not be used at operating temperatures outside the range of 0 °C to 50 °C.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThe module is not suitable for connection to the household power grid and may only be used for building prototypes and for testing and development purposes. Work on or near electrical installations is reserved for qualified electricians; if you are unsure about the power supply or connection, consult a qualified electrician before commissioning the device.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x CCS811 HDC1080 carbon dioxide CO2 temperature and humidity sensor, VOCs\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045683204445,"sku":"F23106835","price":41.77,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/ccs811-hdc1080-kohlendioxid-co2-temperatur-und-feuchtigkeitssensor-vocs-funduino-4300501.jpg?v=1791492015"},{"product_id":"dht11-temperatur-und-luftfeuchtigkeitssensor-kompatibel","title":"DHT11 temperature sensor - humidity, 0-50 °C, 3-5.5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital sensor for temperature and humidity in a single module\u003c\/li\u003e \u003cli\u003eMeasuring range: 0 to 50 °C temperature, 20 to 95% relative humidity\u003c\/li\u003e \u003cli\u003eAccuracy: ±2 °C and ±5% humidity\u003c\/li\u003e \u003cli\u003eDigital signal via a single-wire protocol, no ADC required\u003c\/li\u003e \u003cli\u003eOperating voltage: 3 to 5.5 V, direct operation with common controller boards\u003c\/li\u003e \u003cli\u003eWaiting time between measurements: at least two seconds\u003c\/li\u003e \u003cli\u003eSmall DIP form factor with three connection holes\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis temperature and humidity sensor outputs both measured values via a digital single-wire protocol. This eliminates the need for an analog-to-digital converter and significantly simplifies the circuit, as the sensor uses a simple GPIO pin of the controller.\u003c\/p\u003e \u003cp\u003eThe design with three connection holes fits directly onto perforated circuit boards or can be plugged into breadboards using pin headers. With an operating voltage of 3 to 5.5 V, the sensor works with 3.3 V and 5 V logic boards without a level shifter. The accuracy of ±2 °C and ±5% humidity is sufficient for prototype room monitoring, greenhouse control, or storage climate monitoring.\u003c\/p\u003e \u003cp\u003eThe waiting time is important: There must be at least two seconds between two consecutive measurements; querying the sensor more quickly does not provide new data. The measuring range and delay limit the sensor to ambient temperatures without extremes. Operation requires only a power supply within the specified voltage range and firmware that processes the single-wire protocol.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThe sensor is intended exclusively for building prototypes and for testing and development purposes and is not suitable for installation in household mains circuits. When working on or near electrical installations, a qualified electrician must be involved; consult a qualified electrician before commissioning if there are any doubts about safe use.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cp\u003e1x DHT11-compatible temperature and humidity sensor (blue, without printing)\u003c\/p\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045684941149,"sku":"F23109209","price":2.69,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/dht11-temperatur-und-luftfeuchtigkeitssensor-kompatibel-funduino-1666794.png?v=1791492845"},{"product_id":"master-gy-sht40-d-gy-sht41-d-digitaler-temperatur-feuchtigkeitssensor","title":"GY-SHT4x temperature and humidity sensor - I2C, -40 to +125 °C, 2 versions","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital sensor measures temperature and relative humidity simultaneously\u003c\/li\u003e \u003cli\u003eTemperature measurement range −40 to +125 °C, humidity 0 to 100% RH\u003c\/li\u003e \u003cli\u003eAccuracy of ±1.5 °C and ±3% RH across typical operating ranges\u003c\/li\u003e \u003cli\u003eI2C interface with addressable communication\u003c\/li\u003e \u003cli\u003eOperating voltage 1.08 to 3.6 V\u003c\/li\u003e \u003cli\u003eFour-pin SMD package\u003c\/li\u003e \u003cli\u003eFactory calibrated, no adjustment required\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe sensor measures temperature and humidity via a digital I2C interface and outputs the measured values directly to a microcontroller board for further processing. The sensor pair operates with low power consumption from approximately 1.1 V; to operate it with 5 V boards, use a level shifter for the digital line.\u003c\/p\u003e \u003cp\u003eThe two versions differ in accuracy and measurement speed. Under typical ambient conditions, both achieve single-digit accuracy, and calibration after installation is not required. The I2C address can be selected through external circuitry, allowing multiple modules to operate on the same bus.\u003c\/p\u003e \u003cp\u003ePower consumption is minimal during operation; the measurement frequency can be configured via the datasheet or firmware settings. Typical applications include monitoring room climate, storage conditions, or machine enclosures. In mobile projects, a small battery is sufficient to provide power for several days of operation.\u003c\/p\u003e \u003cp\u003eThe sensor requires a microcontroller board with I2C master support and a power supply within the specified range. The measured values are available via the digital interface; there is no analog output. The SMD design requires a breakout board or careful soldering onto a circuit board during assembly.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe sensor is intended exclusively for prototyping and testing and development purposes. Use as part of a household electrical installation is not permitted. If you have questions about integration into existing electrical systems, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Digital temperature and humidity sensor - GY-SHT40-D \/ GY-SHT41-D\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"GY-SHT40-D","offer_id":66045685203293,"sku":"F23107628","price":5.2,"currency_code":"EUR","in_stock":true},{"title":"GY-SHT41-D","offer_id":66045774922077,"sku":"F23105691","price":7.88,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/master-gy-sht40-d-gy-sht41-d-digitaler-temperatur-feuchtigkeitssensor-funduino-1591574.png?v=1791487247"},{"product_id":"bodenfeuchtesensor-analoger-hygrometer-0-100","title":"Soil moisture sensor - analog hygrometer, 0-100 %","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eSoil moisture sensor for measuring soil moisture\u003c\/li\u003e \u003cli\u003eAnalog voltage output, directly connectable to an analog-to-digital converter\u003c\/li\u003e \u003cli\u003eMeasurement range from 0 to 100 percent possible\u003c\/li\u003e \u003cli\u003eElongated sensor probe design for direct soil installation\u003c\/li\u003e \u003cli\u003eRobust stainless steel or ceramic insert to prevent corrosion\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eA soil moisture sensor determines the moisture level in the soil and outputs the measured value as a voltage signal. Its operating principle is based on the change in electrical conductivity between two electrodes when water enters the soil's pore space. The analog output level can be connected directly to the analog input socket of a microcontroller board or an analog-to-digital converter.\u003c\/p\u003e \u003cp\u003eThe measurement range of 0 to 100 percent soil moisture covers both dry soils and temporarily waterlogged conditions. Calibration is performed in software using two reference points: one measurement in a dry state and one in saturated soil. The module then provides values that can be converted directly into moisture levels.\u003c\/p\u003e \u003cp\u003eTypical applications include irrigation control for potted plants or garden beds, as well as soil monitoring in greenhouses and field trials. The elongated probe can be inserted to any depth and reliably measures whether a substrate still has moisture reserves or needs watering. The module is also suitable for moisture loggers used in research projects.\u003c\/p\u003e \u003cp\u003eThe sensor requires a supply voltage between 3.3 and 5 volts for operation; depending on the microcontroller board used, level shifting may be necessary. Recalibration may be advisable, particularly after extended storage. The module is intended exclusively for outdoor or protected vegetation areas and is not suitable for saline soils or extreme, continuous waterlogging.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThis sensor is intended exclusively for building prototypes and for testing and development purposes. Work on or near electrical installations must be carried out by qualified electricians; if you are unsure about the power supply or connection, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Hygrometer, moisture sensor for measuring soil moisture\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66126274920797,"sku":"F23106436","price":1.7,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/11127-F23106436_01.png?v=1791495624"}],"url":"https:\/\/funduino.com\/en\/collections\/humidity-sensors.oembed?page=2","provider":"Funduino","version":"1.0","type":"link"}