This product consists of an online air quality system, meteorological parameters and auxiliary facilities. It can monitor conventional air pollutants such as SO₂, NO, NOx, CO, O₃, PM_2.5, PM₁₀, etc. The monitoring method complies with China’s environmental monitoring standards and US EPA certification requirements. It uses the ultraviolet photometer method to detect O₃, the ultraviolet fluorescence method to detect SO₂, the chemiluminescence method to detect NO/NOx, the infrared gas correlation filter method to detect CO, the beta ray method to detect particulate matter