Supply and control device for the Busch-Welcome® system. For connecting the indoor and outdoor bus. For connecting an electric door opener (12 V~, 1.6 A or potential-free output 30 V, 3 A). For switching the light or for connecting a light relay (230 V, 3 A). Switching time of door opener or light can be adjusted. For up to 65 consumption units. You can find further information on commissioning and operation in the system manual and the online operating manual. Use high-impedance door openers. Nominal resistance at least 20 ohms.