Multifunctional LCD Air Quality Monitor 4 in 1 CO2 Digital Meter Carbon Dioxide Temperature and Humidity Meter TVOC HCHO DetectorFeatures:1. Enhance your indoor air quality monitor with the built-in DART electrochemical sensor, which can accurately detect carbon dioxide (CO2), formaldehyde (HCHO), volatile organic compounds (TVOC), and particulate matter (pm2, 5/PM10).2. This new model can provide real-time data and an average value. It is suggested to focus on the average value of each gas after testing, as real-time data is unstable due to long-term monitoring.3. Everyone needs to know the air quality where you live. This air display has a color digital LCD screen, which is large and easy to read.4. This air monitor is easy to operate and you only need to press the function button. The entire design of the site makes it easy for anyone to read the readings in real-time, which is easy to carry.5. It can help us detect the air quality in home, kitchen, bedroom, office, school, car, hotel, travel, camping, party, etc., especially children, children and pregnant women. Description:Material: ABSTuering Mode: LCDColoric Digital Display Screen Swing Error: 3%-30%Size: 118mm x 70mm x 34mmWorking Voltage: 3.7V Preheating Start-Up: 120S (TVOC Formaldehyde Detection Only)Battery Capacity: 1200mACecession Time: About 4hStandby Time: About 240-360 minutesPackage Included:1x Air Quality Monitor1x User Manual1x USB Charging CableNote:1. Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Thank you!2. Please allow 1-3cm measurement deviation due to manual measurement.