Simply Automated US2-40 Custom Series Universal Dimming Transceiver Base 900W deluxe universal dimmer controller base. Works just like a regular light switch or dimmer. Requires optional faceplate -- single-rocker, dual-rocker, 4-button, 8-button or single-rocker/4-button. Faceplate color choices include white, ivory, almond, light almond, brown or black. Utilizes ultra-reliable Universal Powerline Bus (UPB) technology. No new wiring needed! For new or existing lighting fixtures, lamps, fans and other electrical devices. Powerful expansion capability  up to 250 devices using UPStart software, your PC and Computer Interface Module (PN: UMC-USB)! Can transmit and receive scenes with other Simply Automated dimmers, plug-in modules, wall receptacle, fixture modules and other UPB devices  can control virtually any UPB device that connects to AC power wiring anywhere in the home. Dimmers require both a neutral (white) and hot (black) connection. Do not use on a 3-way circuit. Your home should be no more than 2500 square feet and have only one breaker panel. A phase coupler is required in some home installations.