Surround Air Intelli-Pro XJ-3800 7-in-1 Intelligent Air Purifier with Sensors that Monitor Air Quality, Pollutant Types and Performance Advanced diagnostics that monitor pollution levels, types of pollutants detected, filter performance and filter life Cleans the air in 7 ways, an air-cleaning technology for virtually every airborne indoor pollutant.Applicable Area:Up to 500 sq. feet True HEPA air filter, combined with ionizer, to capture dust &allergens such as pollen, ragweed, dust mites & mold spores Includes activated carbon filter for chemicals and odors and germ-killing UV lamp Washable electrostatic dust collector cell adds yet another proven air-purifying technology