The original solid-state dimmer sets lights for the perfect mood or ambiance. Rotate to select light level, and either rotate or push to on/off. This dimmer has a locator light behind the rotary dimmer to help locate in darkened rooms. The Dim-N-Glo dimmer is available in single-pole models, where the lights are controlled from one location and 3-way models, where the lights are controlled from more than one location.