Smart switches and dimmers enable use of smart control for on/off and dimming operation of existing lighting on the switch circuit. Single gang plate is included. Neutral wire is required for connection's. Works with mobile and voice activated control.|Smart Dimmers enable on/off and dimming light control throughout a switch circuit utilizing a STARFISH app. Measuring 4.63-inch x 2.76-inch x 1.72-inch a single gang plate is included, and neutral wire is required for connection. Dimmer Switch is rated for use with up to 450W of Incandescent or LED loads.