Ortech DWOS Passive Infrared Sensor with Ambient Light Level Sensor

12 amps Passive Infrared Sensor with ambient light level sensor, Has one relay (equal to single pole switch), Can turn a load on and hold it as long as the sensor detects occupancy, After no motion is detected for the set time delay, the load turns off automatically, Detects difference between heat emitted from human body in motion & background space