Help to Know the Environment: Because our air quality monitor has a high-precision sensor to detect and display the temperature and humidity of the environment, carbon dioxide concentration, and can switch between and , it can help users know the environment.Fast Charging: The air quality monitor has a built-in 2400mAh lithium battery, so it only takes 1-2 hours to fully charge and has 10-12 hours usage time or 18 hours standby time.Package Included: You will receive an air quality monitor, a data cable, and a manual.For Many Places: The air quality monitor can be used for many places, such as offices, bedrooms, halls, and other places.After-sales Service: We provide the best quality products and the best service. If you have any questions, you can contact us and we will provide a variety of solutions for you to choose fro .Specifications:Name: Air Quality MonitorMaterial: ABSSize: about 98*90*42mm/3.86*3.54*1.65inNet weight: about 231gTemperature: -10~40Humidity: 0~99%RHCarbon dioxide: 0-5000ppmManual and automatic calibration functionPower cord: Type C to USBAlarm: buzzer + indicator bar to make an alarmBattery level detection: remaining battery displayCharging: charging status displayProduct ListAir Quality Monitor*1Data Cable*1Manual*1Note:1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings.2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.