1.9 1: Multifunctional air quality detector - Real-time monitoring of CO2 concentration, CO concentration, TVOC value, HCHO value, PM2.5/PM10/PM10 value, temperature and relative moisture. This provides a comprehensive view of indoor air quality at a glance. - Multiple display modes: switch between screen layouts to suit your needs and/applications, making it easy to focus on the most important readings. - Low maintenance operation: there is no need to change the battery frequently, helping to reduce upkeep and downtime. - Clear benefits: helps you maintain healthier indoor environments by tracking key pollutants and conditions, supports timely ventilation decisions, and aids in meeting comfort and safety standards. - Practical use scenarios: - Home living and sleeping spaces: monitor CO2, PM2.5, humidity, and temperature to optimize ventilation and comfort during daily activities and overnight rest. - Office or conference rooms: keep track of CO2 and VOC levels to maintain alertness and productivity during meetings and long work sessions. - Renovation, new construction, or occupied spaces: observe PM2.5/PM10, HCHO, and VOC-related readings to assess air quality during and after improvements.