Wire-free switches are battery operated so they are simple to install.
Use wire-free switches to control any number of individual wire free
dimmers. Available in white.
LightwaveRF WHITE METAL 1 Gang Wireless On/Off Dimmer. Battery powered 1 gang dimmer that wirelessly controls LightwaveRF devices and lamps. These 1 gang dimmer switches can be installed on any flat surface, they are battery operated and not connected to your mains wiring so can be placed anywhere you want. This can be controlled by PC or smartphone when used with the WIFI link controller.