Aqara W100 Climate Sensor - Set up via Thread & Matter

Configuration Matter/Thread
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1

Hi,
So I just bought the Aqara W100 Climate Sensor, one of the first Matter-over-Thread climate sensors.

However, I am unable to connect it to my thread network.

This is what I do:

  • I choose “Add matter device” in Home Assistant, and add it as a new device;
  • I scan the Matter QR code.
  • After confirming, it tries to add the device. It says “Configuring” for a short while and then it says something like “Adding device not possible”;
  • When I try to re-add the device, it gets stuck at “connecting”;
  • When I press the reset button, and try to re-add, it goes back to “configuring”, followed by the same error message. The next tries always get stuck with “connecting” untill I reset my W100 again;
  • The Aqare app is able to detect my device (over bluetooth), but can not add it to a matter server, since the Aqara app can only do this when you have an Aqara Matter server;

This is my setup:

  • Home Assistant 2025.5.1
  • Home Assistant SkyConnect as the only OT border router;
  • OpenThread Border Router 2.13.0;
  • Matter Server 7.0.0;
  • I have several Eve Energy plugs set up through Matter over Thread and they work fine;
  • I don’t have any other Thread border router, and I don’t have Zigbee (which the climate sensor also supports);

Any help would be appreciated. :slight_smile:

2

Okay, this workaround seems to work:

  • Scan the matter device using your (iPhone) camera so it will be added to Apple Home;
  • Share it with Home Assistant later on;

Strange it doesn’t work with HA directly.