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

Product code: 5225
The KNX IO 520 (1J2I) is a compact blind actuator with two additional binary inputs. The actuator is used to control a blind, a shutter or a window drive. The relay contacts are electrically interlocked.
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The inputs can be connected to conventional switches with an external voltage of 12 to 230 V. In the not configured state the binary inputs control the actuator channel. Via commissioning the device using ETS® software the binary inputs can be used independently.

Two push buttons and three LEDs allow a local operation and a visualization 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 65 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 blind output
  • Pluggable screw connector (3 poles) for binary input channel 1 and 2

Output channel (blind actuator)

  • Relay type: 230V~/8A
  • Inductive load (cosΦ = 0.4): 230V~/3.5A

Input channel (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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