It is ideal for use in public buildings, stairwells, corridors, warehouses, toilet lobbies or areas where lights only required when occupied. And this item is kind of automation product based on infrared technology. People come, lamp lighting and people left, lamp shutdown. The PIR switch will allow lights or fans to operate up to a point where no moving body heat is detected. Suitable for fluorescent lights, incandescent lamps, energy save lamps or exhaust fans. Properties: reduce energy bills, durable, save and reliable.