BR-11A 2.8 Inch TFT Display Screen CO2 Detector Portable Handheld CO2 Meter

Features:
With the 2.8inch TFT display screen, so you can see the data more clearly, which can give you a better using experience.
This product is in small size, so you can carry it with you to anywhere you want to use it.
A wide application: you can use this product for home air detect, car air detect, office air detect and so on.
With the sound alarm function to let you know, which can give you a better using experience.
Also with the screen backlight function, you can press the R button to turn on or turn off it according to the environment.
The white type with one detecting screen, and the grey type with two detecting screen, the grey type can record data of 10 hours.