... when the voltage range varies from 160V-250V.4.The electronic ballast works in high frequency beyond 20KHZ,quietly, no negative ... in T5,T8,T12 Tube.6.The electronic ballasts have CCC,CE,RoHs,EMC2×40W Electronic ballast with PF0.98,THD<20%,CCF<1 ... .7,quick/preheat start (option),with CE approval,3years warranty.... Electronic ballast 4X40W/0 ...