Review on 📊 Enhanced Monitoring System for Carbon Dioxide Levels in Offices and Classrooms by Mike Bogan

**Update**. So I tried again to see if I liked it and still NO! Why does it turn off every few hours? I want to see my weed level growing, so I have to click on it, turn on the light on a bright eve of the time to see it, and then wait for it to get a reading! I'm having such a hard time getting a working CO2 meter, I just wish I didn't have to measure CO2 levels in parts per million! Just sending it back doesn't cost 80€. This thing says USB or battery which means there is no plug, you must have a USB next to it, or you can buy a plug separately! For $80 I'll send it back and get a more expensive USB probe. No no if it works I can't add it!