In terms of its design and performance, the air purifier is made to cover the entire home. At the same time, the QuietKEAP technology built into the Core 400S ensures low-noise operation below 24 dB. The associated app offers a high level of user-friendliness, as it enables users to remotely control all settings of the air purifier via a smartphone and monitor information such as the current air quality or the remaining filter life.