... 100V~240V,277V, 347V,400V.HPS&MH convertableUL,CUL, CE,GS,TUV approvedNo fan,no resin insideDimming function is option.Compare ... % energy saved compared with magnetic ballast.· Increase the lifetime of bulb, save the maintenance cost.· More lumens: 20-30% more ... Input voltage: 100V~277V, 400V· HPS/MH compatible Approval: CE, GS, TUV, UL.CUL Customized integrated grow light soluaitons are available ...