That's the same brand I bought, after the last similar thread on HN which led me to get interested in this topic.
I had never monitored CO2 at home, and now I see that it routinely goes beyond 1500 in the living room. I can open windows and in 5 minutes it goes down to 700-800... together with all the warm air that was costly to produce now that's winter and it's so cold outside. And in 1 hour it goes back to 1000+.
So I've ended up getting used to see and ignore its metrics, because the alternative is to open windows every 60 minutes and lose a lot of money on heating.
I had never monitored CO2 at home, and now I see that it routinely goes beyond 1500 in the living room. I can open windows and in 5 minutes it goes down to 700-800... together with all the warm air that was costly to produce now that's winter and it's so cold outside. And in 1 hour it goes back to 1000+.
So I've ended up getting used to see and ignore its metrics, because the alternative is to open windows every 60 minutes and lose a lot of money on heating.