GE 45610 Z-Wave Add On Auxiliary Switch (Light Almond) Auxiliary (Slave) switch for control of one light from two (or more) locations. Must be used with Primary (master) Switch Easy to install using existing wiring (Neutral required) Requires in-wall installation with hard-wired connections. Decora Wallplate not included. Wirelessly control on/off & dimming functions of Z-Wave controlled lighting Provides both Z-Wave wireless and manual (local) control