- Noiselessness in night and automatic (subject to good air) mode. It works - you can see by the condition of the filter after 3 months of use. Reacts to smells from cooking, to candles, to incense sticks, to the firebox (in a completely different part of the house). At maximum power, there is no vibration and extraneous sounds (as someone wrote earlier in the reviews). They noted for themselves that in the morning after sleep, the nose ceased to be stuffy. Convenient control from the application in the phone.
- We have been using it for 4 months, no defects have been identified.