The V-Pro Dimmer series from Varilight offers exceptional features including programmable dimming adjustable minimum brightness and superior overload protection via a micro-processor. This Mirror Chrome intelligent leading edge dimmer is a 1 Gang 2-Way switch suitable for 1-10 LEDs. There is no limit on the number of transformers you can use as long as you keep within the maximum rating of the dimmer (in this case 400 Watts).