AirGradient Forum

Expected sensor MTTF

My indoor monitor CO2 readings went from ~400ppm to ~7500+ a few days ago. Any idea if this could be a failed sensor?

What is the mean-time-to-failure of the different sensor modules (asking as I previously replaced the PMS5003 module)?

Screenshot for the current readings over the last

Hi @cyberhiker , I’m sorry to hear that the device doesn’t work as expected.

According to SenseAir, the SenseAir S8 and S88 have a life expectancy of >15 years.

Regarding the issue you’ve experienced, could you try plugging your air monitor into a different USB power adapter and observe the CO2 reading? An unstable (usually undervoltage) power supply can cause a massive CO2 spike. If the issue still persists, please feel free to contact us via https://www.airgradient.com/support .