1Premium Material: This infrared detection sensor is made of premium ABS, which is sturdy and wear resistant and has a long service life. 2High Stability: This product is a high stability passive infrared detector, which uses advanced signal analysis and processing technology to provide superb detection and anti false alarm performance. 3Working Principle: When an intruder passes through the detection area, the detector will automatically detect the activities of the human body in the area, and if there is dynamic movement, it will send an alarm signal to the control host. 4Anti Theft: This human body infrared sensing switch can effectively prevent thieves from approaching, and is a very practical security tool. 5Widely Applicable: The product is suitable for security protection in family residential areas, houses villas, factories, shopping malls, warehouses, office buildings and other places.