Radar/doppler motion sensor

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RCWL-0516 Microwave Radar Sensor Switch Module Body Induction Module 4-28V 100mA


  • Operating Voltage: 4-28V
  • Operating Current: 2.8mA (typical); 3mA (max)
  • Detection Distance: 5-9m
  • Transmitting Power: 20mW (typical); 30mW (max)
  • Output Voltage: 3.2-3.4V
  • Output Voltage Driving Capacity: 100mA
  • Trigger Way: repeat trigger
  • Output Control Low Level: 0V
  • Output Control High Level: 3.3V
  • Operating Temperature: -20~80 celsius
  • Storage Temperature: -40~100 celsius



Adjust repeat trigger time, default trigger time is 2s; increasing capacitor's capacity will make repeat trigger time longer; and actual counting trigger time can operate as below:

Stick capacitor on C-TM, test 9196 3-pin frequency F, repeat trigger time T=(1/f)*32768


Detection distance adjustment; connect with resistor and detection distance will become shorter; if not connect. Detection distance is 7m; if connect with 1M ohm resistor, detection distance is 5m


Internal VCC parallel connect with internal 1M ohm resistor to CDS pin (that is 196 9-pin) by R-CDS. CDS connects with photoresistor. You can close detection function at night.

Pin Definition

  • 3V3:3V3 power output
  • GND:ground
  • OUT:control output; when detect moving objects, it will output high level
  • VIN:input voltage,4-28V
  • CDS:enable control chip, lower than 0.7V, OUT will output low level all the time


  1. The right ahead of induction side should't place any metal to block
  2. The front/back side should reserve more than 1cm space
  3. Module and installation carrier

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Radar/doppler motion sensor

Radar/doppler motion sensor

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