mmWave - C4001 24GHz Human Presence Detection Sensor for Arduino & ESPHome (25 Meters, UART)
The sensor detects human presence and motion up to 25m using 24GHz millimeter-wave technology. It features strong anti-interference, FMCW modulation, and versatile installation.
Pinout
- VIN1
Power supply input, per DFRobot SEN0609 wiki pinout definition
Type · powerVoltage · 3.3V or 5V operating supply per DFRobot SEN0609 wiki specification - GND2
Ground, per DFRobot SEN0609 wiki pinout definition
Type · groundVoltage · 0V - RX3
Sensor serial port receive, per DFRobot SEN0609 wiki pinout definition
Type · serial rxVoltage · UART logic for 3.3V/5V supply context - TX4
Sensor serial port transmit, per DFRobot SEN0609 wiki pinout definition
Type · serial txVoltage · UART logic for 3.3V/5V supply context - OUT5
Start wiring
UART · 3.3V or 5V operating supply per DFRobot SEN0609 wiki specification · 0V
Verify supply voltage and logic levels before powering up.
Module pins: VIN, GND, RX, TX. Schematik maps them to your board in the app.
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