This product is mains powered and used to control two externally connected lighting loads (up to 300W each). The device features 2 rockers on the front for controlling the state of each of the loads. It is also possible to associate other devices.2 GANG 300W DIMMER MODULE LDM31M 1 Gang 300W Dimmer, 868.1MHz, Malaysia 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. Load Type 2G 300W Dimmer GLS 25-300W per channel Tungsten filament 25-300W per channel Tungsten halogen 25-300W per channel 12V ELV Tungsten halogen with wirewound or electronic transformers 35-300W per channel