1The carbon dioxide detector monitors and displays the concentration of carbon dioxide per cubic meter in real time. 2It has a wide range of applications and can be used in offices, homes, gymnasiums and other places. 3This portable air quality detector supports smart color screen display, clear numbers, easy to identify and read. 4It can detect and display the temperature and humidity of the environment to help users understand the environment in time. 5CO2 detection range is 4006000PPM; TVOC detection range is 02.0mg/m, HCHO detection range is 00.6mg/m. Item Type: Air Quality Detector Material: ABS Size: Approx. 9x7x3.5cm / 3.5x2.8x1.4in Weight: Approx. 168g/5.9oz Current: 500mA Battery: A Polymer Lithium Battery 18650 3.7V 1500mAh (Not Included) CO2 Detection Range: 400-6000PPM CO2 Detection Accuracy: 1PPM TVOC Detection Range: 0-2.0mg/m HCHO Detection Range: 0-0.6mg/m Temperature Measurement Range: -10-50 Temperature Measurement Accuracy: 2 Humidity Detection Range: 0%-99%RH Humidity Detection Accuracy: 3%RH With Bluetooth Function 1 x Air Detector 1 x Manual 1 x USB Data Cable