This is a air detector that can help you check the air condition. It's a nice helper for wine brewing, greenhouse fruit and vegetable planting,warehouse CO2 detection,etc.Features:Equipped with temperature and humidity sensors. Quick & accurate detection.It displays the current CO2 data, as well as the temperature and humidity data. The colored circle will change according to the CO2 conten.Small size and light. Convenient to carry.Simple operation. No need to calibrate after starting up, work and detect automatically.2.8 inch LCD screen + backlight display. It can inform you the air condition with accurate datas.300~420 mins long standby time.Can be used at various occasions such as agricultural cultivation, greenhouse vegetables, production warehouses,raw materials processing, home, educational institutions, vip sports, office, etc.Specifications:Item Color: Black,white (optional)Battery: Lithium-battery 1200mAHCharging Mode: USB 500mA Type C InterfaceCO2 Detection Range:400~5000 PPMCO2 Detection Sensitivity: 1 PPMApplicable Temperataure: -1~70Package Size:140*125*42mm/5.5*4.9*1.7inPackage Weight:165g/5.8ozPacking List:1* Air Detector1* Instructions1*USB Cable