Technical hut 5 Pieces HC-SR501 PIR Motion Sensor For Projects Security Circuit and Motion Detector Electronic Hobby Kit

Automatic lighting hallways, corridors, bathrooms, basements, warehouses, garages, and other places, automatic ventilation exhaust fan and other electrical appliances (incandescent, fluorescent, buzzer, automatic doors, electric fans, dryers and automatic washing machine) especially for use in businesses, hotels, shopping malls, warehouses, sensitive areas or security zones and alarm systems. Can also be used for security purposes