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).