Features: A new generation of chips, nowhere to hide carbon dioxide, detection of CO2 concentration, with extremely high sensitivity. Providing high accuracy and fast measurement response. Smart carbon dioxide value tester gas analyzer uses air semiconductor TVOC sensor to monitor temperature and humidity of air quality. Real-time monitoring of the temperature and humidity in the room, regardless of exercise, entertainment, or rest at home, all feel at ease and imagine life. The new intelligent detection system will integrate a variety of instruments and reduce it by several times. The compact and convenient design allows you to detect the quality of the environment around you any time, anywhere. Infrared strong core air quality meter, two colors: black & white, battery included. Package Includes: 1x CO2 Detector Specifications: Material: ABS Size: 90x70x40mm/ 3.5x2.8x1.6 inches Detection Accuracy: 10PPM Detection Range: 400-5000PPM Sensor: Infrared Charging port: TYPE-C Color: Black/White note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.