The 3 Gang V-Plus Dimmer Switch from Varilight with a White finish, and White or Aluminium push-on/push-off buttons; a high quality range suitable for halogen, incandescent and CFL technologies. They are not for use with dimmable LEDs. This intelligent leading-edge dimmer is micro-processor controlled offering superior overload protection; if you mistakenly connect your dimmer to too many lights or transformers it will protect itself from failure by turning the lights down or off until the load is corrected.