... ROHS, UL, FCC 2) Multi Voltage AC120-240V 3) Dimmable:3 phase at:50%,75%,100% 4) HPS/MH ballast ... Suitable for HPS/MH bulb of America and Europe standardInput ... -40 to 65°CMaximum lighting distance: 15mDimmable: 3 phase manual dimming, 3 phase at:50%,75%,100%Prolong lamp life ... 16AWG*120mmUS/600V 16AWG*120mm Electric Ballast 400W for hydroponic growing systems