The Aurora 1 Gang 2 Way Zero Cross Rotary Dimmer Module is suitable for the control of dimmable compact fluorescent and LED lamps, dimmable electronic transformers, LED drivers, toroidal transformers and tungsten lamps. The integrated trimming potentiometer allows CFL and LED lamps to be set at a minimum level to prevent them going out or flickering at the bottom of the dimmer range The V-Dim switches are not suitable for use with LEDbulbs. 1 gang or 2 way 60-400va dimmer module Complies with the latest Electrical Safety standard for dimmer switches 1 Year guarantee