Replace a standard switch with a Rotary eco-dim™ and you'll save energy every time you use your lights, while creating the ambiance you want. You can easily turn the lights on and off with the push knob, and eco-dim guarantees at least 15% energy savings compared to standard switches. Turn the knob to adjust the lights to your favorite level - creating the perfect ambiance and saving even more energy. Designed for use with an incandescent or halogen bulb, the bulbs connected to the dimmer will last more than 3x their rated life. Installing a Rotary eco-dim dimmer is easy and saves energy too. You can replace your existing switch with a Rotary eco-dim dimmer in as little as 15 minutes. The Rotary eco-dim coordinates with Fassada(TM) wallplates and accessories. Includes both white and ivory knobs. Save energy beautifully with Lutron.