I've been carrying this co2 sensor with me the last few days and it's really interesting to see how different various environments like outside/cars/plane are. It also has a barometric pressure sensor. Guess when the flight was.
I love my Aranet4. It’s a phenomenal piece of technology. When I start getting brain fog and forgetting people’s names during Zoom calls, I check the CO2 levels. It’s usually the lack of ventilation in the office and not lack of caffeine.