CO2, HCHO, TVOC, AQI Detector Household Air Quality Monitor Carbon Dioxide Formaldehyde Analyzer Rechargeable Portable BatteryOOTDTY CO2 Portable Accumulator, HCHO, TVOC, AQI Detector Household Air Quality Monitor Domestic Carbon Dioxide Formaldehyde AnalyzerThis kind of civil multifunctional smart home small air quality monitoring equipment can provide a numerical reference to change the air environment in your home. It allows you to track 4 main factors of air quality: TVOC, HCHO, CO2, AQI. Features: Powered by lithium battery, the air quality monitor makes it easy to take measurements from one room to another to get an overview of the air quality at home, workplace, school, day care center and so on. It allows you to track the 4 main factors of air quality: HCHO, TVOC, CO2, AQI, meet the basic needs of users. Intelligent detection of different types of gases. The most common gases can be detected, no need to worry about the applicability. The measurement is displayed on a clear digital display screen, small and lightweight design for easy to carry. Natural airflow sensing technology has been adopted to more accurately identify air quality issues. Built-in battery, energy saving and environmental protection, long standby time. Widely used in home, office, enterprise, government, school and automobile, etc. Detect and monitor air problems at any time to ensure the fitness of family members or employees. Specifications:Material: PlasticsColor: BlackDisplay Mode: LED Digital Display + Traffic LightFloating Error: 3% - 30%Working Voltage: 5VRheating Speed: 120 SecondsBattery: 3.7V, 1000mAhCharging Time: About 4 HoursStandby Time: About 240 - 360 minutesProduct Size: 68*70*40mm/2.7*2.8*1.6inProduct Weight: 90g/3.2ouncePackage Size: 150*85*40mm/5.9*3.3*1.6inPackage Weight: 145g/5.1ounceNote:This detector is a household product, The monitoring data is for reference only and cannot be used as any underlying data. When you start the detector for the first time, it needs nice air ventilation for about 30 minutes before you can use it normally. Please check that the appliance is in normal condition before use. Instrument data can only be tested and used after the instrument data is stable. Every time the instrument is running, it must go through the 0001 0120 preheating timing condition. For long-term detection, real-time data is unstable. Test a few times and write down the average value yourself. Please do not place the detector in the environment of high concentration powders and high concentration of polluting gases for a long time. Pay attention to fire prevention/waterproof/dustproof/anti-fall/anti-sun exposure/moisture-proof/mildew-proof and avoid violent shaking. Use of electronic equipment, not for children or people with mental disabilities. If it is not used for a long time, it should be stored in a safe place and kept away from flammable and explosive materials. Package List:1 * Air Quality Tester1 * USB Cable