The Overkiz (by Somfy) integration platform is used by many different vendors, like Somfy, Hitachi, and Atlantic. This integration will allow users to integrate their devices into Home Assistant using the Overkiz API.

Supported hubs

  • Atlantic Cozytouch
  • Hitachi Hi Kumo
  • Nexity Eugénie
  • Somfy Connectivity Kit
  • Somfy Connexoon IO
  • Somfy Connexoon RTS
  • Somfy TaHoma
  • Somfy TaHoma Beecon
  • Somfy TaHoma Switch
  • Thermor Cozytouch

Supported devices

Over 6000 devices from 60 brands are compatible with the Overkiz platform. This integration will retrieve your devices and map them to the relevant Home Assistant platforms.


To add the Overkiz integration to your Home Assistant instance, use this My button:

Overkiz can be auto-discovered by Home Assistant. If an instance was found, it will be shown as Discovered. You can then set it up right away.

Known limitations

Zigbee, Z-Wave, Hue, and Sonos devices not supported

Even though most Overkiz hubs support adding Zigbee, Z-Wave, Hue, and Sonos devices, this isn’t supported in the Overkiz integration. All these platforms have native integrations in Home Assistant which are more stable and feature-rich.

Stateless RTS covers

Covers that use the RTS protocol are stateless and do not report their state back to the hub. This means that Home Assistant will not know the state of the device after it has been controlled.

If you only control your RTS cover from Home Assistant, you can use the template cover to create a stateful cover entity. This will allow you to keep track of the current state (open or closed) and use the cover in automations and scenes.

  - platform: template
      stateful_rts_test_shutter: # unique ID
        friendly_name: "Stateful RTS Test Shutter" # your name
        optimistic: true # default when no state is available
          - service: cover.open_cover
              entity_id: cover.rts_test_shutter # change to your device id
          - service: cover.close_cover
              entity_id: cover.rts_test_shutter # change to your device id
          - service: cover.stop_cover
              entity_id: cover.rts_test_shutter # change to your device id

Overkiz API limits

Server busy, please try again later. (Too many executions)

During peak hours, it could happen that the Overkiz platform is unable to execute your command. The integration will try to retry this command, however, this is not guaranteed to succeed.

Execution queue is full on gateway

The Overkiz API only supports 10 requests in its execution queue. If you try to command more devices at the same time, for example with a group, this will fail with EXEC_QUEUE_FULL. To work around this, you can create a scenario in the corresponding application and call that scenario instead after syncing it in the integration.

Internet connectivity required

This integration communicates via the cloud-based Overkiz API. The Somfy TaHoma v2 and the Somfy TaHoma Switch offer the Somfy TaHoma Developer Mode (local API), which is not supported in Home Assistant yet.

Another option if you are only using Somfy IO compatible devices is to purchase a Velux KLF200 hub and use the Velux integration which has a local API.

Local API via HomeKit Controller

If your hub (e.g. Somfy TaHoma) supports HomeKit natively, your setup code will be added as a sensor in Home Assistant. Look up your hub in Home Assistant and retrieve the value from the ‘HomeKit Setup Code’ sensor. You can now configure the HomeKit Controller integration in Home Assistant and benefit from local support. Only a limited set of devices is supported.