12 in 1 Portable Air Quality Monitor Dual Chip & High Accuracy Tester NEW

New, never used, only opened for inspection and testing. 12-in-1 Air Quality Monitor Indoor multifunctional indoor air quality monitor uses an array of sensors to provide a wealth of information: CO2, TVOC, PM1.0, PM2.5, PM10 indication, Humidity, Temperature and time, and a CO2 alarm Dual Chip & High-Precision With the newly upgraded 5.0 Dual Chip, this air quality monitor employs two independent but synergistic chips, one for processing data collected by the sensors and the other for managing the Air Quality Monitor's user interface. This processing not only improves the data processing speed, but also enhances the stability and accuracy of the data, ensuring the reliability of the results CO2 Alarm & AQI Smiley Face The CO2 Detector automatically triggers an alarm and buzzes when indoor carbon dioxide levels exceed a safe threshold. When the CO2 Monitor index indicator is in the “GOOD” range, a smiley face appears Portable Can be plugged in or used wirelessly, easy to carry and move, and can quickly switch between different environments for air quality testing. Helps detect gas and air pollution in home, kitchen, bedroom, office, school, car, hotel, travel, camping, etc. Simple Operation Takes about a minute from opening the box to plugging it in and taking a reading. The humanized design of the buttons on the back allows you to set up and operate it in a simple and clear way with intuitive functions. The user manual that comes with it is detailed and informative.