Description DIY Supplies : ELECTRICAL Air Quality Tester CO2 Meter Tester Temperature Humidity Measuring Device High Sensitive Multifunctional Detector1. Temperature and humidity display: use high-precision temperature and humidity sensor to detect, real-time display value; temperature display 0---40 Celsius (32---99 Fahrenheit), humidity display 20%---95% (tolerance + /-5%);2. CO2 concentration display: use a high-precision carbon dioxide sensor to detect and display the CO2 concentration value in real time; the display concentration value range is 400---6000ppm;CO2 concentration level display and alarm prompt: according to the value detected by the CO2 sensor, different colors are used to display the concentration level, which is a more intuitive experience;It can detect and display the temperature and humidity of the environment to help users understand the environment.It is suitable for office, family, gym and other occasions, with a wide ranges of applications.Intelligent color screen display, the number is clear, easy to identify and read.Easy to Carry: Small and portable, easy to carry, does not take up too much space, can be hung on the wall or placed on the desktop.Material:ABScolour:WhitePackage Contents:1 x Air Quality TesterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.