Fluorescent safety and security light. Weather resistant die cast aluminum housing. Operates on standard 120 volt 60 Hz household current. Intended to be conduit connected to a properly installed and properly grounded metal weatherproof junction box (not provided). Easy installation, mounting pattern included. Truer white light color compared to yellow high pressure sodium, use where energy efficiency and light color are important. Nighttime on/daytime off controlled by a non-replaceable button type photo control, cULus Listed for wet location use. Replacement bulb is a 4U 65 watt Mogul base fluorescent.