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. Soft starting - increases lamp life & reduces lumen depreciation. Anodized, extruded aluminum housing. Lightweight- 400W weighs 11lbs./600W weighs 14 lbs. Can ignite both HPS & MH lamps. Very quiet operation. Instructions & warranty information. Rubber feet reduce noise and vibration 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. Purchase 240 volt cord separately (prod # 903082). 1000 watt Galaxy™ Electronic Ballast is 240 volt only. 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. Extruded aluminum housing is engineered to dissipate heat and keep the components cool. Smart Volt™ feature allows ballast to run on 120, 208 or 240 volt power. Detachable power cord allows easy change over. Comes standard with 120 volt cord, purchase 240 volt cord separately (Part #903082). Resetable circuit breaker for short circuit protection. Lamp cord receptacle compatible with all Sun System® reflectors and sockets. Operates both HPS & MH lamps. Completely silent and lightweight. Extremely efficient – 99% power factor. FCC compliant. Generator ready.