{"product_id":"dfrobot-c4001-radarsensor-24-ghz-mmwave-bis-25-m-uart","title":"DFRobot C4001 Radar Sensor - 24 GHz mmWave, up to 25 m, UART","description":"\u003cdiv style=\"margin:24px 0;padding:22px;background:#f7f7f7;border:1px solid #dddddd;\"\u003e\n\u003cdiv style=\"background:#ffffff;border:1px solid #e5e5e5;padding:18px;margin:0 0 18px 0;\"\u003e\n\u003ch2 style=\"margin:0 0 12px 0;font-size:22px;line-height:1.3;\"\u003eDFRobot C4001 mmWave Radar Sensor 24 GHz - Presence and Motion Detection up to 25 m\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 12px 0;line-height:1.6;\"\u003eThe DFRobot C4001 is a millimeter-wave radar sensor. It detects whether someone is in a room - even if they are sitting still, reading, or sleeping. This is exactly where conventional PIR motion detectors fall short, since they only respond to movement.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px 0;line-height:1.6;\"\u003eThe module operates at 24 GHz and uses FMCW modulation. This allows it to detect not only presence, but also measure a target's distance and speed. The sensor detects presence up to 16 m, and motion and distance up to 25 m. Radar operates independently of light, dust, fog, temperature, and ambient noise.\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eTo get started, the digital switching output is all you need: it switches on as soon as someone is detected - no serial programming required. For more advanced use, read measurements such as distance and speed via the UART interface and configure sensitivity and detection range. This makes the sensor suitable for both introductory classroom projects and advanced maker applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#ffffff;border:1px solid #e5e5e5;padding:18px;margin:0 0 18px 0;\"\u003e\n\u003ch3 style=\"margin:0 0 12px 0;font-size:18px;\"\u003eHighlights\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding:0 0 0 20px;line-height:1.7;\"\u003e\n\u003cli\u003ePresence detection up to 16 m, motion and distance detection up to 25 m\u003c\/li\u003e\n\u003cli\u003eDetects stationary people, not just movement\u003c\/li\u003e\n\u003cli\u003eDistance measurement from 1.2 m to 25 m, speed measurement from 0.1 m\/s to 10 m\/s\u003c\/li\u003e\n\u003cli\u003eDetection range of 100° horizontal x 40° vertical\u003c\/li\u003e\n\u003cli\u003eUnaffected by light, dust, fog, temperature, and noise\u003c\/li\u003e\n\u003cli\u003eTwo output options: UART for measurements and configuration, digital switching output for simple applications\u003c\/li\u003e\n\u003cli\u003eOperates at 3.3 V or 5 V, compatible with Arduino, ESP32, and Raspberry Pi\u003c\/li\u003e\n\u003cli\u003eCompact 26 x 30 mm board with integrated antenna\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#ffffff;border:1px solid #e5e5e5;padding:18px;margin:0 0 18px 0;\"\u003e\n\u003ch3 style=\"margin:0 0 12px 0;font-size:18px;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding:0 0 0 20px;line-height:1.7;\"\u003e\n\u003cli\u003eLighting that stays on as long as someone is in the room\u003c\/li\u003e\n\u003cli\u003eSmart home and building automation, for example via ESPHome\u003c\/li\u003e\n\u003cli\u003eClassroom projects on sensors, radar technology, and automation\u003c\/li\u003e\n\u003cli\u003eOccupancy detection in rooms, workspaces, and hallways\u003c\/li\u003e\n\u003cli\u003eDistance and speed measurement in robotics and model-building projects\u003c\/li\u003e\n\u003cli\u003eContactless activation of indicators, announcements, or displays\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#ffffff;border:1px solid #e5e5e5;padding:18px;margin:0 0 18px 0;\"\u003e\n\u003ch3 style=\"margin:0 0 12px 0;font-size:18px;\"\u003eTechnical specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 16px 0;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background:#478a84;color:#ffffff;text-align:left;padding:10px;border:1px solid #dddddd;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"background:#478a84;color:#ffffff;text-align:left;padding:10px;border:1px solid #dddddd;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eDFRobot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eModel \/ Manufacturer's part number\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eC4001 \/ SEN0609\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eOperating frequency\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003e24 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eModulation method\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eFMCW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003ePresence detection\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eup to 16 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eMotion detection\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eup to 25 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eDistance measurement\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003e1.2 m to 25 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eSpeed measurement\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003e0.1 m\/s to 10 m\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eDetection angle\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003e100° horizontal x 40° vertical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eOperating voltage\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003e3.3 V \/ 5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eInterface\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eUART, 9600 baud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eAdditional output\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003edigital switching output (OUT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003ePinout\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eVIN, GND, RX, TX, OUT (2.54 mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eAntenna\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eintegrated on the board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eOperating temperature\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003e-40 °C to 85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dddddd;\"\u003e26 x 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#ffffff;border:1px solid #e5e5e5;padding:18px;margin:0 0 18px 0;\"\u003e\n\u003ch3 style=\"margin:0 0 12px 0;font-size:18px;\"\u003ePackage Contents\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding:0 0 0 20px;line-height:1.7;\"\u003e\n\u003cli\u003e1x DFRobot C4001 mmWave Radar Sensor 24 GHz (SEN0609)\u003c\/li\u003e\n\u003cli\u003e1x 5-pin header\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":66129539858781,"sku":"F27211499","price":34.12,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/14187-Screenshot-2026-09-03-150121.png?v=1791497611","url":"https:\/\/funduino.com\/en\/products\/dfrobot-c4001-radar-sensor-24-ghz-mmwave-up-to-25-m-uart","provider":"Funduino","version":"1.0","type":"link"}