Platform information: OH 5.1.2 in Docker on Synology DS920+
My Air Quality Sensor (_TZE200_mja3fuja / TS0601) is not providing data for:
CO2, Formaldehyde, and TVOC
In the deCONZ-Phoscon app, I receive the following data as expected:
Temperature 21 °C
Humidity 48%
CO2 373 ppm
Formaldehyde 2 ppm
TVOC 3 ppb
When scanning for new Things in openHAB, four Things are detected (the split into multiple Things was expected):
- Temperature sensor OK
- Humidity sensor OK
- Smart Plug unexpected

- Air Quality Sensor faulty data

The problem is that the Air Quality Sensor is not providing any values/or… NULL output on the two provided channels:
channels:
airquality:
type: airquality
airqualityppb:
type: airqualityppb
The following lines appear in the DEBUG for the deCONZ binding:
2026-02-19 11:01:58.055 \[DEBUG\] \[rnal.discovery.ThingDiscoveryService\] - Unknown type ZHAFormaldehyde
2026-02-19 11:01:58.055 \[DEBUG\] \[rnal.discovery.ThingDiscoveryService\] - Unknown type ZHACarbonDioxide
The two resource types “ZHAFormaldehyde” and “ZHACarbonDioxide” are not listed in the deCONZ binding documentation.
As I understand it, two other Things are therefore not being recognized:
- Formaldehyde
- Carbon dioxide
Furthermore, the Air Quality Sensor mapping in the deCONZ binding appears to be incorrectly defined.
I have attached the corresponding Zigbee device definition.
Should I create an issue on GitHub about this, or is the error on my end?
_TZE200_mja3fuja.json (7.2 KB)