The 18 in 1 air quality meter uses semiconductor and infrared technology to provide accurate, realtime measurements of indoor air quality and related parameters. It securely captures and displays data for Air Quality Index (AQI), CO2, HCHO, TVOC, PM measurements (PM1.0, PM2.5, PM5.0, PM10, PM0.3), temperature and humidity. Data curves and particulate value comparisons help visualize trends, and stored data can be imported to a computer for further analysis. Key features Comprehensive 18 in 1 measurement: AQI, CO2, HCHO, TVOC, PM1.0, PM2.5, PM5.0, PM10, PM0.3, plus temperature and humidity. Data visualization and storage: realtime data curves with particulate value comparison; internal storage allows data import to a computer for record keeping or analysis. USB TypeC charging: builtin 2000 mAh battery supports continuous operation up to 7 hours; convenient USB TypeC charging for fast, common power sources. Clear ondevice display: 2.8 in HD screen presents 13 data points in real time; colorcoded indicators simplify quick assessment of air quality at a glance. Accurate and sensitive sensors: measurements include CO2 at 1 ppm, TVOC at 0.01 mg/m3, HCHO at 0.01 mg/m3, and PM at 1 ug/m3. Practical and portable: compact design suitable for use in homes, offices, classrooms, and other indoor spaces. Specifications and performance Pollutants and indicators measured: AQI, CO2, HCHO, TVOC, PM1.0, PM2.5, PM5.0, PM10, PM0.3, temperature, and humidity. Display: 2.8 inch definition screen with realtime updates; 13 data points shown simultaneously; colorcoded status for easy interpretation. Battery and charging: 2000 mAh battery; up to 7 hours of continuous operation; TypeC charging for compatibility with standard USB power sources. Accuracy targets: CO2 1 ppm; TVOC 0.01 mg/m3; HCHO 0.01 mg/m3; PM 1 ug/m3. Data handling: data curves and historical comparisons; data can be stored and imported to a computer. Use scenarios Home environment monitoring: place in living rooms or bedrooms to track CO2, VOCs, and particulate levels, helping you optimize ventilation and reduce exposure to pollutants during daily activities. Renovation or painting projects: monitor HCHO and VOC concentrations during and after renovations to ensure the space is safe before occupancy. Office or classroom air quality management: use to verify that CO2 levels stay within acceptable ranges and to assess particulate and chemical pollutants, supporting a healthier indoor work or learning environment. Notes on compatibility and use The device employs a combination of semiconductor and infrared sensing technologies to cover a broad range of common indoor pollutants. Data collected can be stored on the unit and imported into a computer for longterm records, reporting, or compliance documentation. The unit includes temperature and humidity sensing to provide context for pollutant readings and to assist in assessing ventilation needs. This product provides a reliable, easytoread solution for monitoring indoor air quality with a focus on practical usefulness, accuracy, and data accessibility.