["Features:\nbrand new and high quality\nReal-time monitoring and real-time display of carbon dioxide concentration per cubic meter. With clock function.\nIt can detect and display the temperature and humidity of the environment to help users understand the environment.\nIt is suitable for offices, homes, gymnasiums and other occasions, with a wide range of applications.\nIntelligent color screen display, clear numbers, easy to identify and read.\nIn the alarm mode, the user is prompted to pay attention to the environment by changing the color and voice.\n400-1500ppm green, 1500-3000ppm yellow, buzzer 2s once 3000-5000ppm red, buzzer 1s once.\nIt has a long service life and can be charged with a USB cable.\nIt is small and portable, easy to carry, does not take up too much space, and can be installed at home.\n\nSpecification:\nProduct Name: CO2 Meter\nPower Supply: USB Adapter\nCO2 Measurement Range: 400-5000ppm\nMaterial: ABS\nColor: White+Black\nSize: app. 8x5x8cm(3.15x1.97x3.15in)\nQuantity: 1 set\n\nNote:\nTransition: 1cm=10mm=0.39inch\nNo retail package.\nPlease allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n1 x CO2 Detector\n1 x USB Cable\n(other accessories demo in the picture is not included.)"]