---
layout: page
title: "IKEA Trådfri (Tradfri)"
description: "Access and control your Zigbee-based IKEA Trådfri (Tradfri) devices."
date: 2017-04-12 22.04
sidebar: true
featured: true
comments: false
sharing: true
footer: true
logo: ikea.svg
ha_category: Hub
ha_iot_class: "Local Polling"
ha_release: 0.43
---

The `tradfri` component supports for the IKEA Trådfri (Tradfri) gateway. The gateway can control lights connected to it and Home Assistant will automatically discover its presence on your network, if `discovery:` is present in your `configuration.yaml` file.

You will be prompted to configure the gateway through the Home Assistant interface. Enter the security key when prompted and click configure.

<p class='note'>
If you see an "Unable to connect" message, restart the gateway and try again. Don't forget to assign a permanent IP to your Trådfri gateway.
</p>

## {% linkable_title Configuration %}

You can add the following to your `configuration.yaml` file if you are not using the [`discovery:`](/components/discovery/) component:

```yaml
# Example configuration.yaml entry
tradfri:
  host: IP_ADDRESS
```

{% configuration %}
host:
  description: "The IP address or hostname of your Trådfri gateway."
  required: true
  type: string
allow_tradfri_groups:
  description: "Set this to `true` to allow Home Assistant to import the groups defined on the Trådfri bridge."
  required: false
  type: boolean
  default: false
{% endconfiguration %}

## {% linkable_title Troubleshooting %}

### {% linkable_title Firmware updates %}

After updating the firmware of your Trådfri gateway it might be necessary to repeat the configuration process. If you encounter problems, delete the `.tradfri_psk.conf` file in your `.homeassistant` directory, restart Home Assistant, when prompted enter the security key and click configure, just like during initial setup. Possible errors: `Fatal DTLS error: code 115`.

### {% linkable_title Compilation issues %}

Please make sure you have `autoconf` installed (`$ sudo apt-get install autoconf`) if you want to use this component. Also, installing some dependencies might take considerable time (>1 h) on slow devices.

### {% linkable_title Setting the `api_key` %}

Do not use the `api_key` variable in `configuration.yaml`. The API key is only needed once at initial setup and will be stored.
