Basic CO2 Meter by Forensics | USB Power & Battery | 10 Year Life | Air Quality CO2 Monitor | Large Digits | New 2020 Design | for Grow Room, Incubator, Beer, Hydroponics, Home and Car |

Works as advertised.

The media could not be loaded.  First unit I received the battery was defective. The second unit I received the battery works but no battery charge indicator as pictures show on Amazon and in the documentation. Forensic Detectors said it was a typo and that the units don't have a charge indicator and they will be updating their documentation. Since when did a picture become a typo? After an hour the co2 alarm went off when the unit was reading below 800. Forensic Detectors said it might be in Plant mode and switch it to HUMAN. The manual does not show how to do this, I could not do it in the menu on the unit because it is not available. Alarm just randomly went off again. Sending back the second unit now.