Energy-efficient continuous monitoring. This device is designed for quiet operation and uses modern sensors and efficient chip technology for reliable long-term indoor air quality tracking. HD visualization. A high-resolution LCD screen dynamically displays real-time, accurate air quality data for easy reading and quick assessment. Space-saving design. The compact form factor fits neatly on a desk or in a pocket, keeping your space uncluttered. Accessible design. Clear symbol guidance, ergonomic control layout, and a central control button make the monitor usable for any user profile, with readable values at a glance. Use scenarios - Home environments: place on a living room or bedroom desk to monitor air quality and guide ventilation or purifier use. - Office or shared spaces: keep on a desk or in a small meeting room to ensure comfortable air quality for occupants and visitors. - Temporary or travel use: carry in a bag for hotel rooms, classrooms, or clinics to assess air quality on arrival and adjust as needed.