Matter Radiator Thermostat II +M

Add-ons Bindings
1

I have a Bosch Radiator Thermostat ( Radiator Thermostat II +M).
Added this succesfully to openhab/matter.

What I did not understand, that I could not see all attributes from this device.
If I examine the device with homeassistant/matter-server/Webinterface I can see this attributes

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But in Openhab I can find only this channels

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What I’m missing for example is the localTemperatureCalibration.

So is there a way to get the missing attributes to Openhab?
By the way, I’m on OH 5.1.0

@digitaldan Did you can give ne some hints

2

I’m only exposing the most common attributes as that cluster is quite large and complex. I was not really aware of localTemperatureCalibration or that any devices yet were using it. Its probably easy enough to add however, so i’ll put that on the list and see about maybe back porting for a patch release.

3

Thanks,

This Attribute solves hopefully a Problem in my heating.

My thermostat and heating are installed under a window sill.

This means that the thermostat never measures the correct temperature.

With Zigbee, I have previously done this using an external offset or by entering an external temperature into the thermostat.

Matter offers remote sensing for this purpose. However, many manufacturers do not allow this because they want to sell me their own devices.

Bosch hints at this local calibration externally. Hopefully, this will allow us to circumvent the issue.

4

I don’t know if this is an option for you, but if you have a Bosch Smart Home Controller you could connect the radiator thermostat to the controller and then use the boschshc openHAB binding. I just added support for Thermostat II and Thermostat II [+M], including the temperature offset service, which allows you to add / subtract a specified amount from the measured temperature. It is available in the latest openHAB release Release openHAB 5.2.0.M1 · openhab/openhab-distro · GitHub :+1:

5

Hi David, thanks, but I have no Bosch Controller.

I tried to have my Setup clean, using no third Party Hubs or Controller.

For that I’m interested in having that Attribute reachable from oh directly.

Br

Thorsten

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