Air purifier for large rooms: CADR rates of 384 m³/h to quickly and efficiently filter pollen, pet dander, and dust up to 5 times per hour – 120 times a day in a 30 m² room. Suitable for large bedrooms, children's rooms, family rooms, and kitchens. Enhanced cleaning performance: Air intake grille, washable pre-filter, and 3-stage H13 true HEPA filter capture up to 99.97 percent of airborne particles as small as 0.3 micrometers, including pet dander, pollen, spores, and dust. Air quality monitor: The professional monitoring sensor detects the air quality near the control panel and filter, displaying it with a value and corresponding color for easy checking. The air purifier indicates when the filter needs to be replaced. 3 adjustable fan speeds: Choose from 3 fan speeds manually or let the automatic mode adjust the fan to filter the air as needed. In sleep mode, it is much quieter than a library and won't even wake your baby. Note: Please remove the plastic packaging from the new filter before operating the air purifier. We recommend replacing the filter at least once every 3 to 6 months.