---
layout: page
title: "KNX Switch"
description: "Instructions on how to integrate KNX switches with Home Assistant."
date: 2016-06-24 12:00
sidebar: true
comments: false
sharing: true
footer: true
logo: knx.png
ha_category: Switch
ha_release: 0.24
ha_iot_class: "Local Polling"
---


The `knx` switch component is used as in interface to switching actuators.

The `knx` component must be configured correctly, see [KNX Component](/components/knx).

To use your KNX switch in your installation, add the following to your `configuration.yaml` file:

```yaml
switch:
  - platform: knx
    name: Kitchen.Coffee
    address: '1/1/6'
```
* **name** (*Optional*): A name for this device used within Home Assistant.
* **address**: KNX group address for switching the switch on/off
* **state_address**: (*Optional*) separate KNX group address for retrieving the switch state.

Some KNX devices can change their state internally without any messages on the KNX bus, e.g., if you configure a timer on a channel. The optional `state_address` can be used to inform Home Assistant about these state changes. If a KNX message is seen on the bus addressed to the given state address, this will overwrite the state of the switch object.
For switching actuators that are only controlled by a single group address and can't change their state internally, you don't have to configure the state address.