Review on 🌡️ Accurate Formaldehyde Vapor Temperature Detector by Dragan Nelson

This meter does the job! This meter runs and performs a self-calibration when switched on. It shows CO2 levels on a bright, colorful display. There is a visual alarm if the concentration gets higher than what I tested. Temperature and humidity are mostly accurate when the device is not charging. It takes about 3 hours or so to charge. I love this display and it is good for measuring CO2 levels in a small space. It doesn't have a viable swappable battery compartment or horn, which is a shame. Overall it works well for my needs.