The product is intended to resemble a normal wall switch and is primarily used to control, via RF, lights. It is battery operated and capable of acting as the primary controller in a system.1 GANG BATTERY CONTROLLER Fully portable, can be used from any location in the system Can be selected as the system's Primary Controller RF Range up to 75m (open field) Can control up to 64 devices in total Pre programmed with ALL OFF function and HOLIDAY MODE function Low battery indicator Long battery life of tp to 2 years Supplied with wall and back box mounting brackets, batteries and all required fixings. Operating Frequency 868.1 MHz Select the appropriate 1 Gang Dimmer Fascia for your Battery Controller Module.