Description Specifications: Air tester to help check air quality, make your physical and mental health better. Characteristics: LCD large screen, different font colors display different air quality. The ventilation holes at the rear can ensure effective detection of air and provide good heat diipation. The product does not need calibration, startup can be tested, accurate detection of carbon dioxide, used in greenhouse agriculture agricultural production, production warehouse, laboratory, family, etc. Widely used and practical, used for epidemic disease prevention and control and avoid the risk of cro-contamination. 1200mAh large capacity battery for long working time, Type-C charging interface. Specifications: CO2 measuring range: 400-5000ppm Temperature measuring range: 0-50 Humidity measurement range: 0%-99% RH Battery: 3.7V, 1200mAh Packing List: 1 * Air Quality Analyzer 1 * USB Cable 1 * User Manual About Shipment 1. If you choose to ship from an overseas warehouse, we will ship it through local logistics. The tracking number information cannot be checked for an order, please contact customer service to send a query logistics website. 2.Your order is generally shipped within 36h, there is a time difference in overseas warehouses and logistics are often delayed. 3.Anything please feel free to let me know,we will solve it for you as soon as poible.