Wireless in-wall switches provide wireless on/off control for connected lights, fans, or other supported loads. Wireless in-wall dimmers add adjustable light levels, so installers must verify that the dimmer supports the load type and wiring requirements, such as whether a neutral wire is needed.

Wireless in-wall switches have wiring requirements that vary by device, with some models requiring a neutral wire and others designed to operate without one. Check the installation instructions for the selected switch to confirm the required line, load, neutral, traveler, or accessory wiring before installation.

Wireless in-wall switches can support three-way control by pairing a load-controlling switch with an auxiliary or accessory switch that provides remote on/off or dimming control from another location. Depending on the system, additional switches may use existing three-way wiring, require no new wiring, or communicate wirelessly without directly controlling the load.

When specifying wireless in-wall switches, compare support for incandescent, halogen, LED, CFL, ELV, MLV, fan, motor, and small-appliance loads, along with 120 V, 277 V, or dual-voltage requirements, current ratings, and whether a neutral wire is required. Also verify the control platform, such as PowerG or Z-Wave, the compatible security panel or smart-home hub, app or voice-assistant control, and support for remote or three-way switches.