I’m testing two similar devices on the same bracket connected to PC. One of these devices show plausible CO2 values like 400-700 and the other gives very unexpected numbers in the same setup. Any suggestions for troubleshooting would be appreciated.
Please confirm whether the TSTAT10 unit you purchased includes a built-in CO2 sensor. If it does not, then the displayed value is not actual CO2 and will be removed in a future firmware update. If it does include a CO2 sensor, we will provide you with a firmware update to resolve the issue.
If the temperature and humidity can be read normally, basically we are certain that the chip code used to read the co2 module at the time of shipment has not been updated. We are sorry that this chip is not supported online now. You can contact our sales department to apply for a return or exchange.
I can confirm that this “faulty” device is giving correct temperature readings.
Can you please explain what the problem is? I’m asking because I have another device with the same chip and layout, but it shows this table:
Can I trust these numbers? The PPM values look okay to me.
I will need at least 10 more of these devices in the future, so I want to understand them better.
Thank you for the clarification. Based on your description and the screenshot, the unit shown is working correctly and reporting valid CO2 values.
As for the other unit that is not displaying proper CO2 readings — this was due to an oversight on our end. The firmware on the auxiliary chip inside that particular TSTAT10 was not properly updated to the correct version. This caused the CO2 readings to be invalid.
Apologies for the inconvenience. Please return the faulty unit, and we will arrange a swap.