Enerlites MPC-50H Ceiling Motion Sensor, Passive Infrared PIR Ceiling Sensor, 360 Degree, up to 2800 sq. ft. Coverage, 120-277VAC, Commercial/Industrial Grade, White CEILING OCCUPANCY SENSOR uses passive infrared technology, PIR motion sensor to automatically turn ON/OFF lights. This motion sensor features a bright LED indicator when the sensor senses motion OCCUPANCY SENSOR Two interchangeable Fresnel lenses for perfect detection based on application needs. This allows the sensor to cover any ceiling height from 8 feet to 50 feet EASY INSTALLATION This ceiling motion detector only requires a 1/2 inch knockout cutting material costs and installation time MULTI-LEVEL, 360 degree interchangeable lens. Compatible with LED, incandescent, CFL lighting. Easy adjustable sensitivity control via DIP switch. Adjustable sensitivity 50%-100% LARGE SENSOR RANGE Up to 1200 sq. ft coverage, 360 degree field view, 120VAC 0 - 800W Ballast or Tungsten, UL-Listed Automatically turn lights ON/OFF when it detects motion and ambient light level. Includes 2 lenses to cover any ceiling height from 8 ft. - 50 ft. This ceiling sensor is ideal for business use for convenience, energy efficiency, security and surveillance. It can be used in warehouses, manufacturing places, factories, offices and other high ceiling, high bay fixtures. The MPC-50 also features a quick and easy installation requiring nothing more than a 1/2-inch knockout to cut labor costs while installing.