KNX USB Interface 312

The KNX USB Interface 312 establishes a bidirectional connection between a PC and the KNX installation bus. The USB interface is the successor of the KNX USB Interface 311 and supports KNX Long Frames. It has a galvanic separation from the KNX bus. Both ETS (Engineering Tool Software) versions ETS3 or later and some visualization tools support this interface.

The KNX USB Interfaces 312 implements a complete KNX Stack with communication objects and BAOS protocol V2. Thus, it offers the possibility to extend devices with USB connection to full KNX devices, which can even be programmed by ETS.



  Technical data

Mechanical Data

  • Housing: plastic
  • DIN rail mounted device, width: 1 TE


  • Signal LED (multicolor) for USB-connection
  • Signal LED (multicolor) for communication

Power supply

  • USB < 100mW
  • KNX < 100mW


  • KNX connector
  • USB connector type B
  • Wire length max. 5m


  • ETS (Engineering Tool Software) ETS3 or later