Functions: Multiple Measuring Gases 2021 upgraded indoor air quality monitor, built-in electrochemical sensors that can accurate detect air of Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compound(TVOC). Those readings involve detection of toluene, harmful chemical substances and pollutants in the air such as carbon dioxide, carbon monoxide,smoke,fog,dust,alcohol,glue,paint,ink, etc. Portable &EasytoUseSize about 6.93 * 2.87 * 1.14 inch, easy to carry, so it can help us dectect the gas air pollution in household, kitchen, bedroom, office, school, car, hotel, travel, camping, party, etc. Especially when a pregnant woman or baby arrives in a new environment, there is no need to worry anymore. LCD screen &RechargeableBatteryThe upgrade LCD color screen can feed the detected CO2, HCHO, TVOC and temperature and humidity data on the screen in real time. Built-in 1800 mAh rechargeable battery can provides long standby time. Accurate measurement Built-in high-sensitivity sensors can quickly and accurately measure the CO2, HCHO, TVOC and temperature and humidity data in the air. When these data are abnormal, a buzzer will be issued, so there is no need to worry about the air quality in the home being exceeded but not knowing it. Healthy HomeThis air quality tester detects organic compounds like formaldehyde which has suspected links to nasal cancer and lung cancer emitted from many household materials. By measuring particulate pollution, an air pollution monitor can also help you know when asthma may worsen and when to change your home's air filter. Description: Name:Indoor Air Quality Monitor Material: ABS Display: LCD display Power: 1 * 3.7V, 1800mAh lithium battery CO2 measuring-range:350ppm-2000ppm TVOC measuring-range: 0.000 mg/m³-2.000 mg/m³ HCHO measuring-range: 0.000 mg/m³-1.000 mg/m³ Temperature measuring-range: 0-90.0(32-194), ±1/±1 Item size: 6.93 * 2.87 * 1.14 inch Item weight: 7.83 ounce Package Included: 1 x Air Quality Meter 1 x USB Cable 1 x ABS Storage Box