Enerlites MPC-52V PIR Ceiling Sensor, Ceiling Occupancy Sensor, Ceiling Light Sensor, Occupancy Sensor, Commercial Grade 360 Degree FOV, 800 Sq. Ft Coverage, 120-277VAC, White Ceiling mount occupancy sensor uses Passive Infrared (PIR) technology to automatically turn lights on when motion is detected and automatically turns them off when no motion is detected for a set time delay Ceiling motion sensor can be directly attached to fixture or ceiling for easy installation. Simply puncture a hole in ceiling, then feed wiring through, cutting installation time by 30 minutes Full 360 Field of View Fresnel lens covering up to 800 sq. ft. Designed for ceiling height of about 8-10ft. Commercial grade, ideal for businesses and commercial properties Multi-level Fresnel lenses: ceiling sensor includes two interchangeable lenses for different sensitivity levels. Customize for best results Occupancy sensor ceiling mount is UL Listed, Incandescent: 400W @120VAC; Fluorescent: 800VA @120VAC, 1200VA @277VAC; Motor: 1/4 HP @120VAC. No ceiling box is needed