This Indoor Programmable Motion Activated Light Control automatically turns light on when motion is detected, and turns the light off 1, 2, 5, 10 or 20 minutes after you leave. Just screw into existing light socket, then install a light bulb of your choice up to 75-Watt. It works with compact fluorescent, LED or incandescent bulbs. The sensor has 120 Degree detection zone and can be rotated to optimize the detection zone. It detects activity at distances up to 20 ft. when mounted at least 8 feet above the floor.