Ltpgtvarilight v pro series ultra flat iridium black 2 gang double 1 or 2 way 2x250 watt push onpush off trailing edge dimmer with iridium black knobs eliminate dimmer buzz for gls bulbs gu10 lamps and lv transformers including trailing edge loadsltpgtltpgtthe varilight v pro professional universal series dimmer also known as the j dimmer like all our products is designed to meet the latest european safety legislationltbr gtltbr gtthe v pro series elimin