electronic ballast voltage:110V~250V wattage:20W,30W,40W with long life- ... No stroboflash and noise. Item: Electronic Ballasts for 220V~240V Fluorescent lamps_T8Technical data:Item no: SWBAT003Wattage:20W,30W,40WProduct size: 100 ... ballasts can be between 110v~250v.(2)steady performance, durable, rapid start, long life-time,(3) upto 30000 hrs,four years warranty ...