For remote control switching and/or dimming, using radio frequency hand held, wire-free wall senders. Receiver switches and receiver dimmers are available in various formats. Senders and receivers can be programmed for controlling a variety of different circuits around a building. 2 channel wire-free wall sender Sends on 2 unique channels Wire-free. No wall box needed. Complete with CR2430 battery Wall senders can be screwed on to any fixed surface or mounted using the pre-fixed adhesive strips