Quartz security light with all metal, all weather shell. Pulse count technology reduces false sensing from wind and rain. Adjustable time delay, light stays on for 1, 5 or 20 minutes after motion stops. Automatic photocell deactivates unit in daylight tosave energy. Manual override turns light off or on with existing indoor wall switch. Allows light to stay on continuously all night when needed. Range up to 100 ft with Range Boost, 70 ft with Range Boost off, varies with surrounding temperature. 270° sensor angle. Uses two 250 watt T-3 Halogen bulbs, 500 watts maximum lighting. 120 volts AC, 60 Hz.