LCN sensor unit unknown?

[mbitcon (Michael Busch-Hewera)]

I am experiencing a similar problem as described here:

Tasmota Chart Detail becomes colored categorical chart rather than line chart

Hi, When setting up HA i noticed a strange behaviour that i couldn’t explain. When looking at the details of this chart (Tasmota Sensor): [image] It will look like this: [image] Rather than this: [image] I couldn’t figure out what is causing this behaviour. Thanks for your input. Best Regrads, Björn

The problem I have seems to be that the ‰ unit of measurement that is used for LCN CO2 sensors obviously is not recognized. If I take the same sensor and let it pretend to measure in Kelvin, I get a history chart. If I use the ‰ unit, the detail view of the sensors switches to that colored bar that is not really helpful to read.
Any Ideas how configure the LCN sensor so the line graph works again? It did work before, I am not sure which update broke the former behavior. If I got it right, the reason is the unit of measurement, but I don’t know how to make ‰ known to the line graph card as a valid unit.
Any help appreciated!

Michael

[alengwenus (Andre)]

The correct SensorDeviceClass and the ppm unit is not known to the LCN integration. It seems HA became somewhat more restrictive if those are missing.
I set up a PR to fix it: Add SensorDeviceClass and unit for LCN CO2 sensor. by alengwenus · Pull Request #142320 · home-assistant/core · GitHub

[mbitcon (Michael Busch-Hewera)]

Thank you very much, Andre