... FCC 2) Multi Voltage AC120-240V 3) Dimmable:3 phase at 50%, 75%, 100% 4) HPS/MH ballast Suitable for HPS ... CMaximum lighting distance: 15mDimmable: 3 phase at 50%, 75%, 100%(optional)Prolong lamp life at least 10%Energy-saving up to 30 ... variationConstant wattage outputBallast noise rated class AThermal protection at 105 degree and restart at 55 degree CelsiusElimination of lamp flickerCE, FCC, UL, ...