UP-Dimmer Universal 250 for insertion in switch box (installation height: 29 mm) or for on-site operation, 1 support plate, 1 touch surface (pos. 1/2), 1 blank cover and 1 combination frame 55 must be ordered separately, one dimmer output, with electronic overload and short-circuit protection, with 2x2.5 mm plug-in terminal per connection, supply voltage: 230 V/50 Hz, no neutral conductor required, load types: - incandescent lamps 20-250 W - high-voltage halogen lamps 20-250 W - electronic transformers 20-250 W - conventional transformers 20-250 W - dimmable energy-saving lamps 20-100 W receiver, dimmer All receivers operate at a frequency of 868 MHz. Up to 32 transmitters can be programmed into each receiver.