PIR Motion Sensor Detector Module (HC-SR501)

Description The PIR Motion Sensor Detector Module (HC-SR501) is a passive infrared sensor used to detect the movement of people, animals, or other heat-emitting objects. It works by sensing changes in infrared radiation within its detection area and outputs a digital HIGH signal when motion is detected. PIR sensors are widely used in security systems, automatic lighting, smart home automation, and IoT projects.