New - boxed RRP £131 The Blueair Blue 511i Max Smart WiFi Air Purifier is a high-quality unit designed to clean the air in any room with its 43m² coverage and True HEPA filtration technology. With its Smart Home compatibility with WiFi and Alexa, controlling the purifier is convenient and seamless. The HEPASilent dual filtration and RealTrack filter tracking features ensure that viruses, smoke, pet dander, pollen, and mould are effectively captured, providing relief for those suffering from allergies or disturbed by pet pets or smoke. The unit operates quietly with an operating sound rating of 19-48 db, making it a practical and efficient solution for improving air quality in your home.