A. As the harm of formaldehyde and particulate matter in the air to human health becomes greater, there is increasing attention to the air quality around. Our air quality monitor is designed to enable a comprehensive understanding of the surrounding air quality, including formaldehyde (HCHO), total volatile organic compounds (TVOC), PM1.0, PM2.5, PM10, temperature, and humidity. B. First, due to effective accessories like the built - in turbine, 4 high - precision sensors, and ARM processor computing chip, the data displayed by the monitor is relatively accurate. C. Second, because of its portability, it can be used anywhere for air quality detection, such as at home or in the office, indoors or outdoors. D. Importantly, to facilitate obtaining and understanding the data, the detector has real - time recording and alarm functions. E. Features: 1. It provides comprehensive data, including formaldehyde (HCHO), total volatile organic compounds (TVOC), PM1.0, PM2.5, PM10, temperature, and humidity. 2. The detection results are relatively accurate, with a real - time recording function, and the data is displayed in the form of charts. 3. It is lightweight and easy to carry, suitable for use in bedrooms, living rooms, offices, hotels, cars, and during travel. 4. It is equipped with a lithium battery that charges quickly and has a relatively long battery life. 5. The built - in turbine makes the detection relatively fast and stable. 6. It has 4 high - precision sensors and an ARM processor computing chip. 7. It has a built - in 1500mAh lithium battery with a relatively long battery life. 8. It is equipped with a USB cable for more convenient charging. 9. It has a large - screen LCD display with an English interface, which is easy to read. F. Calibration is recommended during initial use; otherwise, the data may be inaccurate. G. Specification parameters: 1. Color: Black 2. Material: ABS 3. Overall size: 2.5 inches long × 1.5 inches wide × 6 inches high 4. Net weight: 0.5 pounds 5. Input: 5.0V/1A 6. Battery capacity: 1000mAh lithium battery 7. Cable length: 32 inches 8. Formaldehyde (HCHO) detection range: 0.000~1.999 mg/m³ 9. Total volatile organic compounds (TVOC) detection range: 0.000~9.999 mg/m³ 10. PM1.0/PM2.5/PM10 detection range: 0~999 g/m³ 11. Temperature detection range: 0~50°C 12. Humidity detection range: 20%~90% relative humidity 13. Working environment: 5~45°C