Grove - Adjustable PIR Motion Sensor is an easy to use Passive Infrared motion sensor, which can detect infrared object motion up to 3 meters. Any infrared object moving in its detecting range, the sensor will output HIGH on its SIG pin. You can adjust the SIG HIGH time up to 130s via the potentiometer, moreover, you can adjust the detect range via the other potentiometer.
Typical applications of this sensor include: