WINIX A231 Air Purifier for Bedroom Up to 1110 Ft in 1 Hr With Air Quality Monitor True HEPA Carbon Filter and Auto Mode Captures Pet Allergies Smoke Dust

Also cleans rooms up to 1110 sq ft in 1 hour 555 sq ft in 30 minutes 370 sq ft in 20 minutes 278 sq ft in 15 minutes Captures 9997 of airborne allergens including pollen dust smoke and pet dander as small as 003 microns The first line of defense against the largest airborne particles found indoors Reduces VOCs and household odors from cooking pets and smoke It is designed to catch airborne particles found indoors which also helps prolong the True HEPA Filter life     Builtin air quality sensor measures and adjusts fan speed in realtime Nearly silent on slowest speed   Unit automatically activates its quiet energyefficient Sleep Mode when room is darkened and returns to Auto Mode in the presence of light When the filters need to be replaced the Filter Replacement Indicator LED will illuminate