Leviton 55A00-3IV HLC 2400W UPB Dimmer Switch, Ivory Only products shipped and sold by Amazon.com (not third-party sellers) are eligible for full warranty and technical support offered by Leviton Can be used in new or existing homes that have standard electrical wiring. Switches feature true rocker action. Press and hold to brighten or dim. Press up to turn on. Press down to turn off. Uses Generation III UPB (Universal Powerline Bus), a digital communications standard for lighting and home control that ensures superior reliability. Control high-wattage devices like chandeliers.