["Features:\nbrand new and high quality\nReal-time monitoring and display of carbon dioxide concentration per cubic meter.\nIt can detect and display the temperature and humidity of the environment to help users understand the environment.\nThere is also a smoke alarm function.\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.\n4-color LEDs and an audible alert function to make air quality more intuitive. \n0-499ppm shows green; 500-999 shows yellow; 1000-1499 shows orange; 1500ppm+ shows red.\nIt has a long service life and can be charged with a USB cable.\nThe CO2 detector has 2 types of placement effects, it can be placed standing up or hung on the wall.\nEquipped with USB charging cable, which can be used in special scenarios, such as stations, hospitals, etc.\n\nSpecification:\nProduct Name: CO2 Meter\nPower Supply: USB Adapter\nBattery Capacity: 3000mAh\nCO2 Measurement Range: 0-5000ppm\nResolution: 1ppm\nMaterial: ABS\nColor: White\nSize: app. 10.2x14cm(4.02x5.51in)\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.)"]