Digital output unit for simultaneous control of up to 3 x 100 DSI-compatible control gear units, such as digital electronic ballasts, phase-control dimmers, or electronic transformers. Dimming range is 1 to 100%. Fault feedback to the system is possible. The output side features 3 independently addressable and controllable outputs, each with one twin-core control line. The input side includes a momentary action switch input, mains, and bus connection; control lines are interchangeable. It has screw-terminal connections and a housing for control-cabinet model made of flame-retardant polycarbonate, halogen-free, suitable for 35mm DIN-rail mounting to EN 50022. The permitted ambient temperature is 0 to +50°C, with an IP20 degree of protection and 8 HP of 17.5 mm each.