This kit uses a wireless switch to easily add control of a light or fixture from a second location, even in rooms or locations currently without 3-way wiring. Simply replace the existing light switch with the kit's radiant Switch (wired), then use the included battery-powered radiant Wireless Switch to add another point of control wherever it is desired. The Wireless Switch mounts to any wall or surface - without cutting, wiring or tools - using the provided adhesive. The kit's devices come pre-paired to enable multi-location control in seconds. Want app control These devices are equipped for enhanced functionality. Simply add a Smart Gateway with Netatmo and use the Legrand Home + Away app to control your lights from anywhere (and much more).