The Honeywell InSight™ Series Air Purifier delivers powerful HEPA filtration and features a cutting-edge design that displays device setting information from a distance. The Air Quality Indicator is powered by a VOC sensor that will constantly monitor room air quality while providing real time, easy to understand color-coded feedback via the clear Insight™ Display Panel. When on Automatic Cleaning mode, the unit uses the air quality reading to automatically adjust to the optimal cleaning level for cleaner air. The easy-to-read color-coded feedback on the clear Insight™ Display Panel will illuminate which cleaning level (four available) you've selected. The Honeywell InSight™ HPA5300 HEPA Air Purifier uses Certified HEPA filters to help capture up to 99.97% of microscopic allergens and particles. This air purifier can help capture airborne particles such as dust, smoke, pollen, pet dander and mold spores in extra-large rooms (4.8 x air changes per hour in a 500 sq ft). In addition, the carbon activated pre-filter helps trap larger particles and helps reduce odors and VOCs (volatile organic compounds).