Multi-Voltage digital electronic ballasts that run on 120, 208, 240 volt power. Includes dimming function allowing it to run at 50%, 75% ,100% and super lumen. A great valued ballast that operates both HPS and MH lamps with a 99.9% power factor. Reliable with internal resin coating for long lasting protection from dust and fan cooling for safe control of heat. UL/CE Certified. (120 volt cord included/240 volt cord not included).