Air quality sensor: CO, NO2, HCHO, CH2O

Hardware
1

Hello folks,

I’m trying to further improve my air quality sensor (at moment Temp., Hum., tVOC, PM2.5, PM10, CO2) so I’m looking for sensor that measure the following:

  • Carbon Monoxide (CO)
  • Nitrogen Dioxide (NO2)
  • Formaldehyde (HCHO; CH2O)

Does anyone have any experience on this?

Thank you

2

Mi Air Quality

3

Unfortunately the Mi Air Quality misure only tVOC, PM2.5, CO2. The values that I already have :frowning:

4

hi
i am wondering how accurate that mi air quliatity will be… and how its calibrated…

any luck with the search for other variables? thanks!

5

anyone can help here?