Robotbanao KG001 HC-SR501 PIR Motion Sensor PI Pyroelectric Infrared Module Security Circuit and Motion Detector Electronic Hobby Kit

The pir sensor module allows you to sense motion. It is almost always used to detect the motion of a human body within the sensor's range. It is often referred to used inch pir inch, inch pyroelectric inch, inch passive infrared inch and inch ir motion inch sensor. The module has an onboard pyroelectric sensor, conditioning circuitry and a domb shaped fresnel lens.