KNX Modbus Gateway 886

The KNX Modbus Gateway 886 is a compact Modbus interface with 250 freely configurable channels. The device enables easy integration of Modbus devices that support the RTU protocol via RS-485 and can act as a Modbus master or slave.


The assignment between KNX objects and Modbus registers can be configured via parameters in the ETS - no further tool is needed. Two buttons and three LEDs allow local operation and visualization of the device status.


  Technical data

Mechanical data

  • Housing: Plastic
  • DIN rail mounted device, width: 18 mm
  • Weight: approx. 50 g

Controls and indicators

  • 2 buttons and 3 LEDs, multicolor
  • KNX programming button with LED (red)


  • Type: RTU
  • Up to 25 slave devices
  • Up to 250 channels

Power supply

  • KNX Bus approx. 4 mA
  • Modbus side: supply voltage of 12-24 V⎓


  • Connector for KNX Bus (red / black)
  • Pluggable screw connector (3 poles) for Modbus
  • Pluggable screw connector (3 poles) for power supply