1,Rechargeable Battery: With 1500mah rechargeable battery, with a battery life of up to 6 hours. You can check the air quality anywhere, or you can keep the equipment on for continuous monitoring at a specific place. 2,Large Strorage: The bluetooth has its own storage for 60 days, The app can read 1440 groups of data for up to 60 days, and all three parameters aresuitable. App supports for IOS system and for Android system. 3,LED Screen: With full color display and large screen design, this carbon dioxide detector is super easy to read. LED digital display with intelligent backlight, eye protection function. 4,Multiple Measurement: In addition, Carbon Dioxide Detector can check temperature and humidity levels while reading accompanying CO2 levels. 5,Multi Application: Air quality monitor for CO2, temperature,humidity is perfect for helping us understand the air quality in home, bedrooms, kitchens, hotels, offices, agricultural planting, production warehouse and other place. Item Type: Carbon Dioxide Air Quality Monitor Material: ABS Weight: Approx. 220 g / 7.7 oz CO2 Detection Range: 400 - 600 PPM  50  5 % PPM TVOC Detection Range: 0-2.0mg/m³ HCHO Detection Range: 0-0.6mg/m³ Tthree In One Detection: CO2, Humidity, Temperature Measurement Accuracy: 1 PPM Temperature Range: - 10 - 50 ​​℃Power Supply: 18650 Lithium Battery 1500 mah ( Included ) Product Size: Approx. 9 x 7 x 3.5 cm / 3.5 x 2.7 x 1.3 in Color Change Warning 0-800 Green 800-1200 Yellow 1200-1500 Orange More Than 1500 Red 1 x Monitor 1 x Manual 1 x USB Cable Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store