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.