This dimmer is compact and small in design, the output adopts screw terminal to realize electrical connection, and can be installed in a conventional 80 mm or 86mm wiring box. bus connection is directly connected via KNX terminal. The additional power supply is not required except KNX bus. You can build the various scenes with the dimmer, such as watch movie, entertainment, dinner and rest, and so on; its brightness value can be set as any value (1-100%); it is able to set the duration time to dim up or down to the target brightness and the gradual speed to extend the luminaries life and save energy.