3 in 1 Carbon Dioxide Air Quality Monitor Carbon Dioxide Detector Thermohygrometer Black

Multifunctional air quality detector, real-time monitoring of carbon dioxide concentration, temperature and relative humidity in the air.Using air semiconductor TVOC sensor, plus high-performance chip, detection is more accurate, higher precision, and the accuracy can reach 1PPM.LCD screen with large digital display, clear and easy to read. Intelligent backlight, soft and eye protection.The colorful ring on the screen will change according to CO2 concentration, you can easily know the CO2 level in time.USB charging. Builtin 1500mAh high-capacity rechargeable battery, .