We all know that air is an indispensable part of our lives. Air quality affects our body and mind, but the air is colorless and tasteless, we cannot measure it with our eyes. Right now, we need an air tester to help monitor air quality. Features: Large LCD screen, different font colors display different air quality, green 400-799ppm, yellow 800-1199ppm, orange 1200-1599ppm, red 1600-1999ppm, 2000ppm above four flash colors at the same time. The product is compact and easy to carry. The vents on the back not only accelerate the convection between the air and the machine to achieve effective detection, but also provide a gentle heat dissipation effect. The product does not need calibration, commissioning can be tested, accurate carbon dioxide detection, used in agricultural production of greenhouse agriculture, production warehouse, laboratory, family, etc. Widely used and practical, used for epidemic prevention and control to detect the concentration of CO2 in the population, to control the number of people and avoid the risk of cross-infection. 1200mAh large capacity battery ensures long working time, Type-C charger interface, easy charging. Specifications:Color: Black, White (Optional)CO2 Measurement Range: 400-5000ppmTemperature Measurement Range: 0-50C Humidity Measurement Range: 0%-99% RHuttery: 3.7V, 1200mAhProduct Size: 90*70*35mm/3.5*2.8*1.4inProduct Weight: 117g/4.1ouncePackage Size: 140*125*41mm/5.5*4.9*1.6inPackage Weight: 173g/6.1ouncePacking List:1*Air Quality Analyzer1*USB Cable1*User ManualMany questions about Dropshipping services are as follows:1. How many orders can you handle per day? We are a large company in Shenzhen, China, with a large warehouse that can handle large orders every day. We ship countless packages every day. We can guarantee the order you request.2. How fast can you process orders? We will arrange the shipment as soon as possible after you pay for your order. Priority delivery for dropshipping order3. Can you ship an order without any receipts, invoices and promotional offer inside the package? Absolutely! No invoices, receipts, promotional offer if you leave notes on the order (if you want, we can deliver.)4. If you need other products? We can supply most of the products you need as much as possible1If you have any other questions, please feel free to