I own this one as well. I’ve been pleasantly surprised at how well it works and how quickly I can see changes when it alerts me to a CO2 buildup and I go open

I own this one as well. I’ve been pleasantly surprised at how well it works and how quickly I can see changes when it alerts me to a CO2 buildup and I go open some doors. It’s satisfying to be able to see the effect fresh air has on my environment watching their charts. I picked this one because it also monitors Nitrogen Monoxide which gas stoves give off which many other air monitors do not test for. I haven’t tried their IFTTT integration though, that will be next.