... 110V/240V dual voltage MH/HPS compatible UL,CUL,CE,TUV listed No fans inside HPS/MH electronic ballast. ... startingDimming function is option.Approval: UL,CUL, EMC, ROSH,CE,TUV.Suitable Bulbs400W, 600W, 1000W HPS/MH bulb of ... ≥0.98 ≤10% 100~240 1000Dimension of 1000W:L: 102 in(404mm) W: 24.60 in(97mm) H: 34 ... integrated grow light soluaitons are available UL CUL CE TUV listed HPS/MH electronic ballast