In this tutorial we interface RCWL-0516 Human body induction switch module Intelligent sensor (Radar Motion sensor) with Arduino.
This mini doppler radar motion sensor module is equipped with supporting DC 4-28V wide voltage. It will automatically continuously output the high level TTL signal when there is motion. 360 degree no blind angle detection and maximum 7m sensing distance. It is perfect for DIY microwave motion sensor light switch, human sensor toys, smart security devices, etc.