---
lang: "en"
title: "KNX IO 520 (1J2I) blind control"
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---

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KNX IO 520 (1J2I) blind control

The KNX IO 520 (1J2I) is a compact blind actuator with two additional binary inputs. The actuator is used to control a blind, roller shutter, or window drive. The relay contacts are electrically interlocked. The inputs can be connected to conventional switches with an external voltage of 12 to 230 V. In the unconfigured state, the binary inputs control the actuator channel. Through commissioning the device with the ETS® software, the binary inputs can be used independently.

Two buttons and three LEDs allow local operation and display of the device status. In addition to the output and input channels, the device includes 16 independent functions for logic or timed control.

## Technical features

- 1 output for roller shutter, 230 V∿, 8 A
- Travel directions electromechanically interlocked against each other
- For blinds, roller shutters or window drives
- Position approach via time calculation
- 2 inputs 12..230 V⎓∿, galvanically isolated
- Switching, dimming, roller shutters, scenes, pulse counter
- Integrated logic and timer functions
- Connections: KNX, pluggable screw terminals for IO
- For DIN rail, 1 unit width (18 mm)

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Source: https://shop.marcomweb.it/en/konnex/knx-io-520-1j2i-blind-control

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