The Westek OMLC3BC Outdoor Motion Activated Light Control automatically turns light on when motion is detected and off 10 minutes after motion stops. It is compatible with incandescent, halogen, compact fluorescent & LED bulbs. The Westek OMLC3BC has up to 180 degrees detection zone, has a fully adjustable sensor (up, down, left, right) and a 30 foot range. It screws in, so no wiring or electrician is needed. This light control is NOT designed for use with an enclosed or shaded fixtures of any kind because infrared cannot penetrate glass or plastic.