The MPC-50H is a commercial grade PIR high bay line voltage fixture mount sensor that controls incandescent, CFL and LED lighting. It turns lights ON/OFF based on motion detection and ambient light level. This unit is specifically designed for high bay and fixture mounted applications that offers 2 kinds of lenses to cover the ceiling height from 8 ft to 50 feet and allows for a wide variety of applications such as warehouses, manufacturing and other high ceiling and fixture applications.