Monitoring CO2 levels? Personally, I want a discrete meter for monitoring levels in meetings... especially large design/product discussions. I suspect some of our meeting rooms have poor ventilation and CO2 build up contributes to increasingly dumb discussions.

Awesome! That's what I figured but wanted to check. Yes, indoor air in meeting rooms gets crazy, easily above 1000 ppm.

https://slatestarcodex.com/2018/08/23/carbon-dioxide-an-open... gives a decent reason why you should care about controlling (and thus monitoring as a first step) internal CO2 levels.

Indoor growing, CO2 levels drop and so does the plants ability to grow.