The smart functionality of the P340 air purifier lets you breathe deeply. The A341 filter with its HEPA and activated carbon coating ensures clean air. In addition, the integrated ionization technology supports the cleaning process for an even better result. This lets people suffering from allergies immediately experience the benefits to their nose and throat. The intelligent AUTO mode automatically controls the three performance levels as appropriate for the air quality. The simple design fits in any room. In bedrooms, the P340 ensures an undisturbed night's rest thanks to its quiet operation.