System control unit, door communication, system devices, system control unit, supply and control unit 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 for door opener or light can be adjusted. For up to 65 consumption units. Nominal voltage: , +10 % / -10 % Output voltage: 28 V Nominal frequency: 50 Hz/60 Hz Nominal power: 42 W Protection class (device): IP 20 Temperature range (device): -5 °C to 45 °C Dimensions (H x W x D): 90 mm x 216 mm x 65 mm Division unit: 12 TE
