The In-Wall Universal Dimmer is hereinafter referred to as Dimmer. It is designed to turn on/off and dim lamps using radio waves, controllers and push button directly connected to the Dimmer. For some specific loads it is possible only to turn on/off without possibility of dimming. As Dimmer the device operates under following loads: ⁃ conventional incandescent, ⁃ halogen 230V, ⁃ low voltage halogen 12V (with electronic dimmable transformers), ⁃ dimmable LED, ⁃ when used with FGB001 it may operate with any dimmable load up to 500W. Moreover, as an electronic switch it may work with: ⁃ compact fluorescent lamps, ⁃ LED bulbs, ⁃ fluorescent lamps with electronic stabilizers and majority of conventional stabilizers, ⁃ when used with FGB001 it may operate with any dimmable load up to 500W.