This is a kind of fine quality air quality detector, which is adopt professional electrochemical sensing module, high accuracy, stable performance, antijamming ability, low consumption and can provides long service time. Accurately detect CO2. Large display, you can see the electricity quantity, CO2 value, TVOC value, other-gas value, temperature, and humidity clearly. You can have a try.Features:Compact in size, lightweight and portable, easy to take out and carry around with you.Easy operation, one button to use, press and hold it for 3s to turn on/off, and it will display the current air quality parameters.No need to calibrate after starting up, it will work and detect automatically.Large display, you can see the electricity quantity, CO2 value, TVOC value, other-gas value, temperature, and humidity clearly.Uses professional electrochemical sensing module, high accuracy, stable performance, antijamming ability, low consumption and can provides long service time.And there are 4 colors of squares, green, yellow, orange and red, it will display a "" up on the colorsquare according to the detection value.Hundreds vents on the back, not only speed up the convection between air and machine to get effective detection but also provides fine heat radiation effect.Built-in 1200mAh capacity lithium battery, easy to recharge it with 5V USB cable.Specifications:Name: Air Quality DetectorMaterial: ABSColor: white, black (optional)Battery capacity: 1 * built-in lithium battery, 3.7V, 1200mAh (included)Item size: 93 * 72 * 42mm / 3.66 * 2.83 * 1.65inItem weight: 147g / 5.19ouncePackage size: 142 * 130 * 46mm / 5.59 * 5.12 * 1.81inPackage weight: 258g / 9.10ouncePacking List:1 * Air Quality Detector1 * USB Cable1 * Guideline