Dimming 4 phase at50%75%100%110% Multi-Voltage AC100-265V save energy 30% Prolong lamp ... , silver, blackinput Power1050W± 5%Dimmable4 phase manual dimming, 110%,100%, 75%, 50%Output Power1000WMax THD<10% Max input current10AEfficiency of unit>90 ... ,250w 400w,600w to 1000w.Smart electronic ballast Multi-Voltage (100-265V),integrated and intelligent controling by MCU,no need two ...