Brand New 7-in-1 Air Quality Monitor,Indoor Humidity Monitor,Temperature,CO2/TVOC/HCHO,Time/Date Display Desktop Air Quality Tester,Air Quality Meters for Home/Office/Hotel/Restaurant/School Manufacturer model: AQM ATTENTIONAfter the machine works for 30 minutes, it will enter the screen saver mode, this screen saver mode can be turned off is the on/off button plus that minus button, long press to close. High Accuracy TechnologyEquipped with a fast-responding and sensitive high-performance chip. Adopt high-precision infrared (NDIR) sensor technology for the CO2. Electrochemistry sensor for the HCHO and TVOC. The 5 readings refresh ever 1-2 second. Compare with the common sensor, it is more sensitive, accurately and stable. Multifunctional Easy to ReadSince clean air means a lot to every one.Our Indoor air quality monitor offers accurate monitoring of CO2, HCHO, TVOC, time,temperature and humidity, all displayed on utral-high definition color screen for people easy to identify and read. With its convenient design, you can monitor the environment at any time and it efficiently measures 8 crucial indexes for evaluating air quality. Long Battery StandbyThe Air Quality Detector built-in 2000mAh battery and packed with USB charging cable. It can be used continuously for about 16 hours after full charging. Do not use it when charging or in lower battery because the data may not so accurate. Built-in low power consumption processing chip, can carry on long time uninterrupted monitoring to air quality. It will always take care of you and your family health. LCD Clear DisplayCO2 detector With the large LCD screen display and 24 hours real-time function, intelligent color screen display, the number on the screen is clear User-Friendly OperationWith just a single button, you can effortlessly power the monitor on or off, switch between interfaces. The built-in 3-color LED light conveniently indicates the air quality level, ranging from healthy to unhealthy.