model: LK/S 4.2

The ABB i-bus® KNX Line Coupler LK/S 4.2 is a modular installation device with a module width of 2 space units. It is used as a line or area coupler or as a repeater. As a line coupler, the LK/S connects a line with a main line, as an area coupler it connects a main line with an area line. It provides electrical isolation in this way. In connection with ETS4, the main groups 14…31 can be filtered. The device supports long frames (from > ETS5) and KNX Data Secure communication. KNX Data Secure telegrams are processed, filtered, forwarded, or blocked depending on settings.

Product Characteristics
various routing filter for group and individual telegrams
support of long telegrams
temporary disabling of routing filter via button
blocking of configuration on upper lines from sub line
multi colour LEDs show status information
various ACK and repetition settings
integrated ACK generator