The Square D X Series 10 A ceiling-mount PIR occupancy sensor allows for automatic recognition and precise detection of the environment. This sensor is surface mounted and provides 360 deg detection up to 1,200 square feet, making it suitable for larger, open spaces. 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. This sensor allows automatic recognition and precise detection of the environment. This sensor is fixed on the ceiling and has a white frame. It offers 360 deg field of view from passive infrared sensor. This sensor has a width of 115 mm and a height of 115 mm. By satisfying the ICES-003 and UL 1917 standards, this sensor is cUlus certified. Detects movement up to 1,200 sq-ft, making it suitable for larger open spaces Independent light sensor won't turn lights on if ambient light in room is sufficient Neutral wire is required for operation