Lutron D-603PGH-DK Rotary eco-dim 600-Watt Dimmer 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 Extend bulb life 3x as compared to a standard switch Same sleek features as standard Rotary dimmer, while saving more energy Works in both single pole and 3-way applications