Wide compatibility This 120V dimmer switch is perfect for use with most of dimming light bulbs, and the range is 1%-100%. High wattage capacity If you're looking for a versatile dimmer switch to control your incandescent bulbs, look no further than this 3 way dimmer switch. It's designed for incandescent bulbs up to 600W, as well as dimmable LED and CFL bulbs up to 200W. So no matter what type of bulb you're using, you'll be able to get the perfect level of light with this switch. Strong dimming effect The microcontroller unit (MCU) can help to smooth out the current signal, preventing any flickering from occurring, more compatible than normal dimmers. Reliable quality This quality switch has ETL certificate with a 2-year warranty. It is a reliable product that you can count on. Specifications: Voltage: 120V Material: Aluminum+PC Certificates: ETL, UL(Cord) Colour: White Warranty: 2 years