Replace a standard switch with the Rotary dimmer to and save energy while creating the ambiance you want. You can easily turn the lights on and off with the push knob, or turn the knob to adjust the lights to your favorite level - creating the perfect ambiance and saving even more energy. This rotary also features a Dim-N-Glo Nightlight which helps you find the dimmer in the dark and works with 3-way applications. The Rotary coordinates with Fassada® wallplates and accessories. Includes both white and ivory knobs. Save energy beautifully with Lutron.