When you want a lot of exterior light with minimal power usage, this 100 watt high pressure sodium security light provides up to 19,000 sq. ft. coverage area and features a photocell to ensure dusk to dawn only lighting. Made from metal and plastic construction, it uses a single, included 100W high pressure sodium bulb which provides up to 24,000 hours of bulb life. It is Energy Star rated and includes a 24" extension arm for mounting away from the wall. Maximum light with maximum efficiency.