HID electronic ballast 110V~240V,277V.347V,400V 250W,320W, 400W,500W, 600W,800W, ... 1000W,600W,400W,250WVoltage: 100V~240V,277V, 347V,400V.HPS&MH convertableUL,CUL, CE,GS,TUV approvedNo fan ... resistance and maintenance free operation.· Input voltage: 100V~277V, 400V· HPS/MH compatible Approval: CE, GS, TUV, UL. ... light soluaitons are available 100V~240V,277V,400V.CE,TUV,GS,UL,CUL approved HID electronic ...