This product is mains powered and used to control an externally connected lighting load (up to 300W). The device features a single rocker on the front for controlling the state of the load. It is also possible to associate other devices1 GANG 300W DIMMER MODULE LDM31H 1 Gang 300W 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 STANDARD CARTON QUANTITY: 1 Suitable for use with the following load types and maximum load ratings only.