Lutron DV-603PG-WH Diva 600-watt 3-Way Eco-Dim Dimmer, White Save at least 15% energy instantly every time you use your lights Dim the lights just 25% to save 20% electricity and extend bulb life 4 times Works in both single pole and 3-way applications Extend bulb life 3x as compared to a standard switch Wallplate sold separately