For existing light provides 180-degree field of detection, turns lights on automatically with motion. Detects motion up to 70-feet away. Lights can be manually operated (override mode) from an inside light switch. Integral photocell design prevents lights from turning on during daylight. Connect up to 300W of total incandescent lighting. Test mode allows for easy setup, day or night. Easy-to-use settings allow you to select duration light stays on. UL (Underwriter's Laboratories) and CSA (Canadian Standards Association) listed for wet locations. 300W/120V. 2-year limited warranty.