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This is indeed the absolute best value co2 consumer 24/7 monitor you can buy right now.

You don't have control over calibration however, it's set to auto. So you need to expose it to outside air every 7 days or it will drift. The good news that a drift should be automatically fixed in just a few minutes after you take it outside.

If you live in a high co2 area, the ppm values will not be accurate. But relative measurements will be. And you can just add the difference if you know it to any number you see.




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