ABB i-bus KNX LK/S 4.2 Line Coupler Datasheet

This document is a technical datasheet for the ABB i-bus® KNX Line Coupler LK/S 4.2, a modular installation device used as a line or area coupler or repeater in KNX systems. It provides electrical isolation, filters telegrams, and includes detailed specifications for supply voltage, power consumption, connections, operating elements, environmental conditions, and ETS application program compatibility.