Universal Interface, 4-fold, FM

Universal Interface, 4-fold, FM

Product code: US/U4.2
The Universal Interface has 4 channels which can be parameterised as inputs or outputs, e.g. for connection of conventional push-buttons, auxiliary contacts, LEDs and electronic relays ER/U 1.1.
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The device has 4 channels which can be parameterised as inputs or outputs by selecting the application program.
Using the colour-coded connecting cables, it is possible to connect conventional push buttons, potential-free contacts or LEDs. 
Series resistors for external LEDs are integrated in the device.
The universal interface is inserted in a flush-mounted combined wall and joint box, 60 mm.
Connection via bus connection terminal supplied.
The following list provides an overview of functions:

  • Switching and dimming of lighting (also for 1-button operation)
  • Operation of blinds and roller blinds (also for 1-button operation)
  • Sending of arbitrary values, e.g. temperature values
  • Control and storing of light scenes
  • Triggering an electronic relay for control of electro-thermal valve drive for heating valves
  • Control of an LED (with flashing function and time limitation) for feedback of an operation
  • Operation of different loads by multiple push button actions
  • Operation of several loads in a fixed switching sequence
  • Counting of impulses and operations
  • Reading out of technical contacts (e.g. relays)

Each channel of a device can assume one of the functions described above.

Technical Details


  • Rated Voltage: KNX Bus 21...32VDC
  • Current Consumption: Max 10mA
  • Inputs: 4
  • Scanning Voltage: 20V, Pulsed
  • Input Current: 0.5mA
  • Output voltage 3 to 5VDC
  • Output Current: max. 2 mA, limited via 1.5 k Ω series resistor
  • Permissible Cable Length: Max 10m



Technology KNX
Brand ABB
Mounting Flush
Input voltage KNX Bus (29VDC)
Inputs/Outputs 04
IP rating IP20
EAN 40 16779 56481
inputs_outputs 4
brand ABB

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