The Square D X Series 10A Single-Pole PIR Occupancy Sensor Light Control with back wires provides 180 occupancy sensing up to 1,200 square feet to make saving energy automated and easy. When movement is not detected, and the sensor times out, any movement within the next 30 seconds will turn the lights back ON. However, an independent light sensor will not turn on lights if ambient light in room is sufficient. Complete the look with one of the Square D X Series cover plates (not provided) that easily snaps into place for a modern, flush-facing finish to your walls. Enjoy a consistent look in your room or home with the full line of Square D X Series switches, dimmers, sensors, and receptacles. The sensor switch is made of metal and plastic making it resistant and durable. This sensor switch has a white frame. It features protective painted surface treatment. It switches between occupancy detection (lights on/off are fully controlled) and vacancy detection (lights manual on and auto off). It offers 180 field-of-view from Passive Infrared Sensor that detects movement up to 800 square feet. This sensor switch benefits from an elegant matt finishing, constituting an added value for your interior design. This sensor switch has a width of 43 mm, a height of 103 mm and a depth of 53 mm. By being mercury free and heavy metal free, this sensor switch is cUlus certified.