ABB i-bus KNX Room Controller Dim Actuator Modules Manual

This manual describes the function, technical data, and installation of the ABB Switch/Dim Actuator Module SD/M 2.6.2, Light Controller Module LR/M 1.6.2, and Universal Dim Actuator Module UD/M 1.300.1 for use with the Room Controller Basis Device. It covers parameters, communication objects, constant lighting control, presets, scene control, staircase lighting, and behavior during voltage failure and recovery.