Black Full-Range Sliding Dimmer Our White full-range sliding dimmer has a 6 ft. long cord and ranges from 0 to 500 watts. Has an indicator light showing it's on. Rated for 500 watts/120 volts. The dimmer can be used on any incandescent light bulb, but not LED bulbs. Dimmer can be used on our string lights, paper star lights, and paper lanterns! It also features a built-in positive off and terminal block.