1. Multifunctional air quality detector real-time displays monitors CO2 concentration temperature and relative humidity in the air. 2.Clear Display: Large digital screen with backlight, clear and easy to read 3.High Accuracy: Using air semiconductor and infrared sensor, plus high-performance chip, detection is more accurate, higher accuracy, and the accuracy can reach 1PPM. 4.Quick Heat Dissipation: With multiple ventilation holes, which accelerate the convection between the air and the detector, to achieve effective detection and provide a nice heat dissipation effect. Colour:Silver Material:Zinc Alloy Package Contents: 1 x carbon dioxide detector 1 x USB cable 1 x English instruction manual Only 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.