Review on GZAIR Mountable Temperature & Relative Humidity Tester for Test, Measure & Inspect, Indoor Air Quality and Airflow by Scott Channell

I use it in my flower room. I now have several wireless devices that connect to my weather station and have been using them for years so I'm used to them and know their accuracy. I added this as an all in one CO2 and RH monitor and it matches my other devices which reassures me I can trust the display and adjust CO2m, temp or humidity accordingly. rechargeable, or you can leave it plugged in. The ability to be wall mounted makes this a professional looking and powerful device that could one day save a whole crop.