In-Line - Rotary - Hi-Low-Off - Single Pole Feed-Through Incandescent Dimmer for 18/2 SPT-2 Wire - Black This Hi-Low-Off In-Line Rotary Dimmer is designed for use with 18/2 SPT-2 lamp cord and compatible incandescent lamps. The electro-mechanical rotary control provides Hi-Low-Off operation for conv... See More