Netatmo CO2 reading from multipe indoor units

Questions & Help
1

I’m controlling my ventilation system (systemair) from homey, and the controll works like a sharm. I want to controll the strength of the ventilation on how high the CO2 level is in a room. It has not been a problem setting up some flows for one sensor.
But my problem is to set up a flow for multiple sensors.
If I have multiple roules for different rooms. And the livingroom has CO2 level that sets the ventilation to medium, and a bedroom has low CO2 level the ventilation is then set back to low again, because it’s reading the value for the bedroom.

Is there a way to gather all my four sensors to one virtual device that always shows the highest value of all devices, that I can use in a flow for the ventilation?

2

The group app can do that for you, in the configuration settings for the app you can define the behavior for each value of each group.

3

That worked perfectly, thank you

4

Pointing to it is easy, thanks forwarded to @Jamie for creating this useful app :slight_smile:

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