1、MULTIFUNCTION: It can detect temperature and humidity, CO2, you can view the data you need. Large screen design, real time monitoring, clear digital display, clear test results. It is small in size, easy to carry, and can be carried anywhere. 2、MAIN FUNCTIONS: Intelligent alarm system, ga‑s recognition algorithm, multiple anti interference, air convection technology and greenhouse compensation calibration. 3、WIDE RANGE OF PRACTICAL APPLICATIONS: Suitable for agricultural planting, greenhouse vegetables, production warehouses, radium material processing, etc. 4、HIGH PERFORMANCE: The high performance chip can accurately catch the weak current generated during the electrochemical reactions and accurately calculate the measurement results. 5、FAST REFRESHING & STABLE MEASUREMENT: The carbon dioxide detection can be refreshed once per second, and the measurement can be performed quickly and relatively stable measurement values can be obtained. 1 x Air Quality Detector 1 x USB Power Cord1 x Manual  Item Type: Air Quality DetectorMaterial: ABSColor: As shown in the pictureMirror Surface Size: Approx. 8.9x 8.9cm / 3.5x 3.5inWeight: Approx. 229g / 8.1ozVoltage: 5VCurrent: 500mADetection Method: Infrared (NDIR)CO2 Detection Range: 400-5000ppmCO2 Detection Accuracy: 1ppmTemperature Detection Range: -10℃-50℃Temperature Detection Accuracy: ±1℃Humidity Detection Range: 20%-85%RHHumidity Detection Accuracy: ±4%RHBattery: Polymer lithium battery 2000mAh (included)