Fluorescent safety and security light made of rugged die-cast aluminum housing for years of service. Use where energy efficiency and light color are important. Features include: Nighttime On/daytime Off, integral photocell, easy installation, mounting pattern included. 3600 lumens, CRI (Color Rendering Index) 85. Coverage area 3180 square feet, distance 45 feet. Fixture operates on standard 120V (volts)/60 Hz (hertz) household current, bulb included. Replacement bulb is 4U 65W (watt) mogul base. cULus (Underwriter's Laboratories-Canada & United States) listed for wet location use. Photocell is not replaceable.