120V, Plug In Touch Dimmer, Converts Any Lamp To 3 Level Touch Dimming, Plugs Into Standard Outlet, Non-Skid, Non-Mar Base, Ideal For Lamps Of Wood, Glass, Ceramic, Or Metal, Use With Incandescent & Halogen Bulbs Only, 200W Maximum, Eliminates Need For Expensive 3 Way Bulbs, 60 Cycle.