VERSATILE OUTDOOR LIGHT FIXTURE: This Lithonia Lighting BarnGuard LED light replaces outdated mercury vapor and HPS lights with energy efficient LED lights for outdoor lighting; Use it for outdoor security light applications in yards, barns, or alleys CONFIGURABLE YARD LIGHTS: Choose 6,000 or 10,000 lumens for the right brightness; Set the LED light fixture to 3000K warm white, 4000K cool white, or 5000K daylight for your outdoor lights; Removable lower diffuser provides some up-light and glare control DUSK TO DAWN SECURITY LIGHTS: The BarnGuard is equipped with a twist-lock photocell for dusk to dawn sensor functionality; It automatically turns the light on at night and off in daylight to save energy and eliminate the need for manual switching DURABLE LED OUTDOOR LIGHTS: Built with die-cast aluminum housing and an impact-resistant polycarbonate lens; Mounts to wall or light pole with included lag bolts or mounting arm (sold separately); Sealed against moisture for performance in