Description: 100% brand new and high quality Features: Accurate Test: It can accurately and quickly monitor the indoor CO2 concentration, thus protecting your health. It can also test indoor temperature and humidity in real-time. Real-Time: With newest electrochemical sensors for more accurate and rapidly measurement, it can help you get the real-time insight about indoor air quality to help you take some actions. Stable & Durable : Built-in 3000mAh rechargeable battery can monitor the air quality for a long time continuously. Clear screen display and three-color LED indicator can help you clearly identify the air quality. WIFI Function: Designed with wifi function, it is ideal for monitoring air quality in cars, rooms, schools, office buildings, greenhouses, factories, hotels, hospitals, especially the places with babies, kids, the elderly and pregnant women. Portable & Lightweight: With /5.91x2.91x3.23inches size, stylish exterior and durable materials, this air quality meter is compact and very easy to carry and can be used for a long time. Specifications: Material: Metal + ABS Display method: Common Screen display Atmospheric pressure: 86Kpa - 106Kpa Detection method for CO2 : Infrared (NDIR) Sampling time: 1.5 seconds Product Size: 150x74x82 mm/5.91x2.91x3.23inches Detection temperature: -10C to 50C Relative humidity: 20% - 85% Storage temperature: -10C to 60C Concentration unit for CO2:PPM Power source: Lithium battery with 3000mAh capacity Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Main Unit+ manual+ USB charging cable