5 in 1 Indoor Air Quality Meter

Selling a 5 in 1 indoor air quality meter. It has an LCD digital color screen for easy and clear reading. It measures CO2, Formaldehyde (HCHO), and TVOC. Also measures temperature and humidity. It has CO2 detection, automatic calibration, anti-interference, and an accurate sensor. Applicable to home, office, classroom, hotel, gym, greenhouse, warehouse, wine cellar, etc