1. IMPROVES VENTILATION EFFICIENCY: Seamlessly integrates a dust air sensor and builtin fan, enhancing realtime ventilation monitoring of PM2.5, temperature, and humidity via a bright LED indicator. 2. THOUGHTFUL GIFT CHOICE: An ideal present for loved ones. This advanced device features a scientific design and swiftly measures PM2.5, temperature, and humidity levels, delivering comprehensive environmental insights. 3. ESSENTIAL AIR MONITOR: This triplefunction air quality detector combines a dust air sensor with a builtin fan to track PM2.5, temperature, and humidity, efficiently displaying realtime data. 4. ACCURATE AIR QUALITY ASSESSMENT: By effectively detecting pollutants, this PM2.5 monitor delivers precise air quality readings, keeping you informed. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store