Drives lamp to peak performance. Saves energy! Uses 5-12% less energy than magnetic H.I>D. (depending on lamp specification). Extremely efficient - 99.9% power factor. Anodized, extruded aluminum housing. Lightweight and easy to handle. Will operate both HPS & MH lamps. Silent operation. Rubber feet reduce noise and vibration Short circuit protection. Features the exclusive Smart Volt™ feature. Operates on both 120 & 240 volt power. Simply unplug one cord and plug in the other. 8-foot 120 volt power cord included. These come wired with our standard female lamp cord receptacle that accepts our proprietary, patented male lamp cord making these units compatible with all Sun System® reflectors. Purchase lamp cord with socket assembly separately.