TuYa TS0601 Air quality Sensor : unit error ?

[tazelbaze]

What happened?

in the descriptive note, the units given for this sensor are:

• VOC: ppm
• formaldehyd: mg/m3

However, in the Tuya application, these two data appear:

• VOC: with a factor /100 (0.10 ppm instead of 10 ppm)
• formaldehyd: µg/m³ and not g/m3

Given the role of these sensors, these differences are decisive because if the units are correct then the air is very dangerous (including within the given measurement range).

https://www.zigbee2mqtt.io/devices/TS0601_air_quality_sensor.html#tuya-ts0601_air_quality_sensor

Ce sujet aborde le problème mais très partiellement et sans correction réelle : https://github.com/zigpy/zha-device-handlers/issues/953

What did you expect to happen?

Identify and check if the units are correct

How to reproduce it (minimal and precise)

i have two devices. Same conclusions.

Zigbee2MQTT version

1.36.0-1

Adapter firmware version

ca5298d4c512ec11b93121c7bd930c07

Adapter

usb-ITead_Sonoff_Zigbee_3.0_USB_Dongle_Plus

Setup

Add-on Home-Assistant on RPI4

Debug log

45df7312_zigbee2mqtt_2024-03-03T12-59-27.425Z.log

[maxevilmind]

Yeah this sensor data does not make any sense, if I look at the numbers I should have been dead already. Especially formaldehyde levels. Definitely has problems with units, but in general this is a rubbish sensor