Surround Air MT-8500 6-in-1 Ionic Air Purifier with True HEPA, Germ-Killing UV Light and Negative Ion Generator Cleans the air in 6 ways, an air-cleaning technology for virtually every airborne indoor pollutant Sensor technology with auto mode to adjust air Purification power according to level of pollution True, professional-grade HEPA filter for dust/allergens & carbon filter for odors, chemicals, smoke Ultra-violet lamp destroys viruses, germs, mold and bacteria making it a complete air cleaner system Air ionizer emits purifying Negative ions & photo catalytic filter neutralizes odor, bacteria &Vass