Intense Pure Air Auto, breathe in healthier air in total tranquility, thanks to four dedicated levels of filtration designed to capture even the finest particles and permanently destroy formaldehyde - the most harmful indoor air pollutant. Built with smart technology, the amount of pollution in the home is detected through sensor which automatically adjusts filtration speed accordingly. The device's high efficiency is defied by its quiet performance, as low as 22dB(A), with easy-to-maintain filters. Rounded off by an adjustable air outlet for optimum performance and comfort, and a special automatic night mode, the Intense Pure Air Auto provides outstanding filtration for pure air at home.