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LR/M 1.6.1 and the Universal Dim Actuator Module UD/M 2.230.1 are snapped into a module slot of the Room Controller Basis Device RC/A 8.1. They are used to control dimmable lighting. The Room Controller Basis Device establishes the connection to the ABB i- ® EIB / KNX installation bus.
When connecting low voltage halogen lamps, ABB transformers are recommended. When the incoming supply is restarted (after disconnection from supply for more than approx. 10 seconds), the device conducts a load test and adapts the operating mode accordingly.