ALPSTUGA not showing CO2 Entity

[kvnmunz]

I just purchased the new Air Quality Sensor ALPSTUGA and added it via the IKEA HomeSmart App. The device is synchronized with HA and showing several entities, like Pm2.5, Temperature, Humidity. But the actual CO2 Entity is missing. Is this a problem on my site or is this due the integration?

[derekburt]

I have the same problem and see this in my logs:

2026-01-06 12:23:11.256 DEBUG (Thread-35) [custom_components.dirigera_platform.hub_event_listener] attribute currentCO2 with value 431 not in list of device type environmentSensor, ignoring update...

[sthen]

in case it helps, the received messages from logs look like this

{
  "id": "489607d1-0bd3-41c8-8998-57ef3af8e2a7",
  "time": "2026-01-06T19:48:13.102Z",
  "specversion": "3.178.0",
  "source": "urn:com:ikea:homesmart:iotc:matterd",
  "type": "deviceStateChanged",
  "data": {
    "id": "707c91bf-ad7c-409c-85c8-8f5d4cae234a_1",
    "type": "sensor",
    "deviceType": "environmentSensor",
    "isReachable": true,
    "lastSeen": "2026-01-06T19:48:13.000Z",
    "attributes": {
      "currentTemperature": 12.329999923706055,
      "currentRH": 65,
      "currentCO2": 1753,
      "currentPM25": 3
    },
    "remoteLinks": []
  }
}

and what looks like the relevant bit from calling dump_data:

{'id': 87, 'type': 'sensor', 'deviceType': 'environmentSensor', 'createdAt': '2026-01-04T15:49:29.000Z', 'isReachable': True, 'lastSeen': '2026-01-06T20:09:11.000Z', 'customIcon': 'products_matter_air_quality_sensor', 'attributes': {'identifyPeriod': 0, 'identifyStarted': '2025-12-20T18:55:23.000Z', 'isOn': True, 'currentTemperature': 12.569999694824219, 'currentRH': 66, 'currentCO2': 2105, 'maxMeasuredCO2': 5000, 'minMeasuredCO2': 0, 'currentPM25': 4, 'maxMeasuredPM25': 1000, 'minMeasuredPM25': 0, 'customName': 'Office sensor', 'firmwareVersion': '1.0.13', 'hardwareVersion': 'P2.0', 'manufacturer': 'IKEA of Sweden', 'model': 'ALPSTUGA air quality monitor', 'productCode': 'E2495', 'serialNumber': 13, 'discriminator': -1, 'permittingJoin': False, 'qrCode': '', 'setupCode': '', 'windowOpen': False, 'otaPolicy': 'autoUpdate', 'otaProgress': 0, 'otaScheduleEnd': '00:00', 'otaScheduleStart': '00:00', 'otaState': 'readyToCheck', 'otaStatus': 'upToDate'}, 'capabilities': {'canSend': [], 'canReceive': ['isOn', 'customName', 'windowOpen']}, 'room': {'id': 26, 'name': 'Office', 'color': 'ikea_brown_no_41', 'icon': 'rooms_office_chair'}, 'deviceSet': [], 'remoteLinks': [], 'isHidden': False}

[sthen]

btw Alpstuga does show all sensors if added directly via the Matter integration in HA. After adding Dirigera as a Thread device I was able to add Alpstuga as a Matter device by using the id number (Home smart -> select the Alpstuga -> settings -> connect via QR code -> type the number into HA's "add device, already in use, other controllers" form).

[kvnmunz]

btw Alpstuga does show all sensors if added directly via the Matter integration in HA. After adding Dirigera as a Thread device I was able to add Alpstuga as a Matter device by using the id number (Home smart -> select the Alpstuga -> settings -> connect via QR code -> type the number into HA's "add device, already in use, other controllers" form).

so I have to set up the matter integration with a seperate service, rip dirigera out of the IKEA network and set it up there from scratch or what are the exact steps?

[derekburt]

I didn't think to check the underlying Python library. Looks like a pull request is waiting for CO2 support!

Leggin/dirigera#124

I was not able to add my device via Matter to Home Assistant as per the above (seems there are some Matter bugs, etc. in Home Assistant and I also have some unique networking/container setup), but it worked via Google. Now available for me in both IKEA and Google ecosystem and shows CO2 levels in Google with no issue, although Google does think it can be turned on and off(?).

[sthen]

btw Alpstuga does show all sensors if added directly via the Matter integration in HA. After adding Dirigera as a Thread device I was able to add Alpstuga as a Matter device by using the id number (Home smart -> select the Alpstuga -> settings -> connect via QR code -> type the number into HA's "add device, already in use, other controllers" form).

so I have to set up the matter integration with a seperate service, rip dirigera out of the IKEA network and set it up there from scratch or what are the exact steps?

you can leave dirigera setup exactly how it was and add it to HA using the number that's down on the "connect via QR code" screen in honesmart. You can either leave the existing Dirigera integration as-is (and get some duplicated devices that you can disable if wanted) or remove it.

[sthen]

I didn't think to check the underlying Python library. Looks like a pull request is waiting for CO2 support!

Leggin/dirigera#124

Nice (that's new).

Now available for me in both IKEA and Google ecosystem and shows CO2 levels in Google with no issue, although Google does think it can be turned on and off(?).

There is a 'locator' led so you can confirm that you have the right device if there are several Alpstuga - perhaps it's for that?

[nrbrt]

I've created PR #190 to add ALPSTUGA CO2 sensor support.

The root cause was that the dirigera Python library doesn't have the current_c_o2 field in its EnvironmentSensorAttributes pydantic model yet. The fix creates patched classes (EnvironmentSensorAttributesX and EnvironmentSensorX) that include the CO2 field.

I've tested this with my own ALPSTUGA device and confirmed:

• CO2 sensor entity appears in Home Assistant
• Real-time updates via WebSocket events work correctly
• Values update properly (tested with CO2 readings around 395-400 ppm)

If you want to try it before the PR is merged, you can use my fork:

• HACS → Three dots menu → Custom repositories
• Add: nrbrt/dirigera_platform with category "Integration"
• Install from there (make sure to select the fix-alpstuga-co2-support branch)

[C8opmBM]

it seems the dev is no longer active here, the main https://github.com/Leggin/dirigera just got the fix for this.
Anyone can do a repo of Leggin? I don't know how, I would do it myself.