{"title":"mmWave - C4001 24GHz Human Presence Detection Sensor (25 Meters, UART)","handle":"mmwave-c4001-24ghz-human-presence-detection-sensor-25-meters-uart","url":"/products/mmwave-c4001-24ghz-human-presence-detection-sensor-25-meters-uart","description":"C4001 24GHz Millimeter-Wave Presence Sensor (25 m Range)\nThe C4001 Millimeter-Wave Presence Sensor is a high-precision FMCW radar module designed for reliable human presence, motion, and distance detection. Operating at 24 GHz, the C4001 delivers exceptional performance in real-world environments where traditional infrared or ultrasonic sensors often fall short.\nWith a 100° wide horizontal field of view, 16-meter presence detection, and an extended 25-meter motion and ranging capability, this compact radar module is ideal for security systems, smart home automation, environmental monitoring, and industrial sensing applications.\nEngineered with robust anti-interference capabilities, the C4001 performs flawlessly in challenging conditions including dust, fog, low light, temperature fluctuations, and noise. Unlike PIR sensors, it can detect both static and movingtargets, ensuring dependable occupancy detection—even when someone is sitting or sleeping.\nPowered by FMCW (Frequency Modulated Continuous Wave) radar technology, the C4001 enables real-time measurement of distance, velocity, and motion direction, offering superior resolution and responsiveness. With UART and I/O interfaces, integration with Arduino, ESPHome, Home Assistant, and industrial systems is straightforward.\n\nKey Features\n\n\nHuman presence detection up to 16 meters\n\n\nMotion and distance detection up to 25 meters\n\n\nVelocity detection: 0.1–10 m/s\n\n\nWide 100° × 40° detection beam\n\n\nStrong environmental resistance (dust, fog, heat, cold, light)\n\n\nFMCW radar for high-accuracy distance and speed measurement\n\n\nSupports I/O control and UART communication (9600 baud)\n\n\nCompact size (26 × 30 mm), easy to embed\n\n\nWorks with 3.3 V or 5 V systems\n\n\n\nIdeal Applications\n\n\nHuman presence & occupancy monitoring\n\n\nSmart home automation (e.g., lights, HVAC, security)\n\n\nEnvironmental sensing and motion tracking\n\n\nIndustrial automation & robotics\n\n\nReal-time distance and speed measurement\n\n\n\nPackage Includes\n\n\n1 × C4001 24GHz mmWave Presence Sensor (25 m)\n\n\n1 × 15-pin header\n\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":540,"title":"Default Title","sku":"DF-SEN0609","mpn":"SEN0609","price":25.0,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":833,"option1":"Default Title"}]}