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A comment on AirGradient Open Source Air Quality Monitor for CO2 and PM2.5 Measurements. Parent comment

Re:AirGradient Open Source Air Quality Monitor for CO2 and P... by NikolaNovak on Sunday January 29, 2023 @10:27PM (#34575465)
That one only does co2 though, am I correct? It would not help me with allergens or dust etc
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Re:AirGradient Open Source Air Quality Monitor for CO2 and P... by jve on Monday January 30, 2023 @08:42AM (#34579432)
Yes, CO2/temp/humidity only.

We have one in office, I think more than 2 years already and haven't changed batteries. Bought new one, compared readings and CO2 readings were matching.

Was trying to look whether old one should be recalibrated (per instructions, have to leave outdoors for a while every <don't remember> months). However our office CO2 is already ~600-700ish when people are here, so maybe it is fresh enough for recalibration.

Ah, and home-assistant integration is finally available for Aranet https://www.home-assistant.io/integrations/aranet/

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