Switches and Lighting Controls, Occupancy Sensors, Adaptive Dual-Technology Ceiling Sensor, 1500 Square Feet Coverage, With Relay. "Install and Forget" operation. Auto-adjusting adaptive technology eliminates manual adjustments. Coverage 1500 sq. ft. (360°) low voltage sensor. Long range major motion detection.Office White ABS enclosure blends with ceiling tile. Red LED indicates passive infrared detection.