InSight Series Air Purifier delivers powerful, HEPA filtration and features a cutting-edge design that displays setting information from a distance. Air-quality indicator is powered by a VOC sensor that constantly monitors the air quality while providing real-time, easy-to-understand feedback with the InSight display panel. Automatic cleaning mode uses the air-quality reading to automatically adjust to the optimal cleaning level. Purifier features a touch-screen control panel, auto-off timer and filter check/reset lights. Color-coded feedback illuminates which of the four cleaning levels you select. Air purifier uses HEPA-certified filters to help capture up to 99.97 percent of microscopic allergens and particles such as dust, smoke, pollen, pet dander and mold spores in extra-large rooms (500 square feet). Carbon-activated pre-filter helps trap larger particles and reduce odors and VOCs. Air purifier works with Honeywell A and A Plus Pre-Filters and True HEPA G Replacement Filters.