The Xodus BL775D LED motion deck light is a weatherproof, battery-operated, motion sensing light. It is equipped with a Low Glow accent light which runs from dusk to dawn. The light brightens when motion is detected and has 2 brightness levels with 30-second and 5-minute time adjustment options. The bronze housing of the BL775D goes great with wooden decks, stairs, and doorways as well as indoor locations. It uses Xodus' patented Low Glow Technology to extend battery life well over a year. It requires three 'C' batteries that are not included.