KNX Switching Actuator with Binary Input / 1 Output / 2 Inputs, logic and timer functions
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KNX Switching Actuator with Binary Input / 1 Output / 2 Inputs, logic and timer functions

Product code: 5232
The KNX IO 511 (1O2I) is a compact switching actuator with 1 bi-stable output and 2 binary inputs. The actuator provides the function for universal outputs including scene control, timer, staircase lighting and heating valves (PWM for thermoelectric valve drives).
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The inputs can be connected to conventional switches with an external voltage of 12 to 230 V. In ex-factory settings the inputs are connected internally to the actuator. The actuator combined with input B1 serves as a latching relay. Input B2 is used for zero crossing detection. 

Two push buttons and three LEDs allow a local operation and a visualisation of the device state.

In addition to the output and input channels the device includes 16 independent functions for logic or timer control.

Technical Details


Mechanical data

  • Housing: plastic
  • DIN rail mounted device, width: 1 modules (18 mm)
  • Weight: approx 60 g

User Interface

  • two keys for on device settings
  • three multi color LEDs
  • KNX programming LED and KNX programming key


  • Device Model System B
  • Compatible with ETS 4.2 (or higher)


  • Connector for KNX Bus (red / black)
  • Pluggable screw connector (3 poles) for actuator channel 1
  • Pluggable screw connector (3 poles) for input channel 2 and 3

Output Channel (actuator)

  • Relay type: 230V~/8A, bi-stable
  • Depending on load type (capacitive or inductive)
  • the switching power can be reduced significantly.

Inout Channels (binary in)

  • Voltage: 12 .. 230 V=~
  • Current: < 1 mA



Technology KNX
Mounting DIN Rail
Inputs 2
Operating voltage 230VAC
Outputs 1
Mounting Width 1MW

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