This product is mains powered and used to control an externally connected lighting load (up to 600W). The device features a single rocker on the front for controlling the state of the load. It is also possible to associate other devices with the rocker1 GANG 600W DIMMER MODULE 1 Gang 600W Dimmer, 919.8MHz, Hong Kong RF Range up to 75m (open field) Can control up to 5 devices Can control either a group or a scene Pre programmed with HOLIDAY MODE function Mains powered