Compact in size, lightweight and portable, easy to take out and carry around with you. Adopts high accuracy TVOC sensors, real-time detection, automatic refresh data, with multi-use. Large LCD display, you can see the electricity quantity, CO2 value, TVOC value, HCHO value, temperature, and humidity clearly. and switchable, with stable detection performance, anti-jamming ability, low consumption and can provide long service time. Equipped with air quality level division function, four different colors correspond to different air quality levels, allowing you to more accurately and more graphically know the current air conditions. Hundreds of air vents on the outer shell, not only speed up the convection between air and machine to get effective detection but also provide fine heat radiation effect. Color: black Material: ABS Package Contents: 1 * Air detector 1 * USB cable 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.