Varilight Mocha 1 way Dimmer switch. For your safety, electrical products must be installed in accordance with local building regulations. If in any doubt, or where required by the law, consult a competent person who is registered with an electrical self-certification scheme.. Flat screwless profile remote control dimmer switch with matt satin mocha finish and black insert. 1 gang internal switch, ideal for controlling 1 circuit. Remote control dimmer switch by Varilight.