Plug-in dimmers connect to a standard outlet, with a compatible lamp plugged into the dimmer, and communicate with a smart home hub or controller through wireless protocols such as Z-Wave, Zigbee, or radio frequency (RF). Once paired, they can support remote dimming, on-and-off control, scheduling, and lighting scenes through a compatible app, remote, or automation system.

Installers should match the plug-in dimmer to the lamp’s load type and dimmable rating, since supported capacities can vary for LED, CFL, incandescent, and halogen lamps. They should also check control-system compatibility, whether the unit controls one or two lamps, outlet and pass-through configuration, and whether the installation calls for remote scenes, scheduling, or simple local dimming.

Many plug-in dimmers can control up to two lamps at the same time through their connected outlets. Some models control both outlets together as one load, so verify the device’s load rating and outlet configuration before installation.

Plug-in dimmers typically connect to a standard wall outlet, with the floor lamp, table lamp, or other plug-in light connected to the dimmer, so no special wiring is needed. Use a compatible dimmable lamp and bulb, confirm the dimmer’s load requirements, and provide the compatible smart-home hub, controller, or repeater when the system calls for one.