The KNX power supply unit provides the system power necessary for the bus system. The integrated choke prevents the data telegrams from short-circuiting on the bus line.
available as of 07/08 2017
The coupler can be used both as line coupler and as backbone coupler. As a line coupler, it connects an KNX line with a main line. As a backbone coupler, it
connects a main line with a backbone line. The corresponding lines are then galvanically isolated from each other. A filter table determinies which telegrams are passed through the coupler. With the LK2 coupler the primary line is connected to a data rail, the LK2-2 coupler has bus terminals for both lines.