Pre-Configured Single Rocker Dimmer (PN: US1W9); Simple-n-easy expansion for pre-configured Dimmer Starter Kit or Lamp Module Starter Kit * Utilizes SimplySmart technology to make installation a breeze; No computer programming required!; 1-2-3-Done; Easily change dimming settings or even create new scenes at the touch of a button * Add single rocker dimmer (PN: US1W9) to a pre-configured Dimmer Starter Kit or Lamp Module Starter Kit; Note: only one pre-configured single-rocker dimmer (PN: US1W9) can be ordered per home installation * Powerful custom expansion capability up to 250 devices; Add single rocker dimmer or deluxe dimmer (faceplate options up to 8 buttons), lamp/appliance modules, tabletop pedestal, wall receptacle, fixture modules or scheduler-timer * 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