IKEA Trådfri (Tradfri)

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.

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.


You can add the following to your configuration.yaml file if you are not using the discovery: component:

# Example configuration.yaml entry
  host: IP_ADDRESS

Configuration Variables


(string)(Required)The IP address or hostname of your Trådfri gateway.


(boolean)(Optional)Set this to true to allow Home Assistant to import the groups defined on the Trådfri bridge.

Default value: false


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.

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.

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.