ABB LK/S4.2, Digitaalinen, Sisääntulo/ulostulo, Harmaa, CE, 21 - 31 V, -5 - 45 °C

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.