Ltpgtvarilight v pro series classic 1 gang single 1 or 2 way 400 watt push onpush off trailing edge dimmer with polished chrome knob eliminate dimmer buzz for gls bulbs gu10 lamps and lv transformers including trailing edge loads the v pro series dimmer has soft start technology allowing a longer life span of the bulbs or lamps used by increasing the brightness level softly which also creates a welcoming effect the v pro series were primarily designed for dimmable leds the d