Excellent quality. Bright and easy to read display

I've been searching for a decent Co2 gauge for my little grow room. I didnt realize how quickly the levels rise when having just a few bags in a small space. I was over 1100 and added a little fan and back down to 500. This meter is much nicer than the junk one I got on Amazon last year.

works as it should, battery lasts about 10 hours so I would suggest keeping it plugged in for daily monitoring. 4.8/5 stars