This switch is based on infrared technology, it will automatic turn on when the sensor detects the change of the infrared spectrum of the human body in the sensing range. High and stable sensitivity, automatic turns on/off depended on people's motion. Friendly and convenient, safe and energy-saving. Features: Infrared Sensor: It can detect human movement by detecting infrared ray emitted by human body. It has high and stable sensitivity and can automatically identify day and night. Automatic turns on/off depended on people's motion, which can effectively save energy and improve efficiency. Good waterproof design, easy to install and use, can be used indoors and outdoors. Available in corridors, toilets, stairways, balconies, bathrooms, garages, etc. Specifications: Condition: Brand New Item Type: Infrared Sensor Switch Material: ABS Plastic Color: White Working Voltage: DC9-24V Sensor Angle: 180° Sensor Distance: 0-12M (Adjustable) Size: Approx. 21.5 x 8.5 x 4.5cm / 8.5 x 3.3 x 1.8inch Weight: Approx. 220g / 7.8oz Package List: 1 x Infrared Sensor Switch 1 x Installation Fittings.