JUNG 3500REG is a dimming actuator with an extension that can be used to dim LV halogen lamps in conjunction with Tronic transformers, as well as HV halogen lamps and 230 V incandescent lamps. Switching and dimming commands can be issued by operating touch sensors, dimming sensors, infrared sensors, or via the binary inputs of the instabus EIB system. The extension inputs allow connection of conventional 230 V pushbuttons with one-plane operation or two-plane operation. Switching and dimming commands initiated via the extension can be used by the instabus EIB system.