I only just installed two of these to our laundry room and a bathroom. Although I won’t say it is silent or quiet, it is not loud. It is noticeable but not particularly loud compared to others with 95m^3/hr air flow. In fact, the previous one I had with 75m^3/hr was way louder.The humidity sensor is great, I can hear it kicks in sometimes when the humidity is higher. Not sure how long it will last.There is no instructions for adjusting the humidity sensor to the right level. I strongly suggest not to put the cover on immediately after installation (it is quite hard to take it off again), but to turn/keep the delay timer to 0, so that the fan will turn on or off entirely depending on humidity alone. Both fans I installed has the humidity control set at 60% the lowest level by default. Under normal humid condition (not after shower etc), switch on the power and adjust the humidity sensor up until it starts running, and then turn it down again slowly till it stops. This should be right level that your fan would stop when the room becomes “dry enough” again. Two humidity lights on (and two off, four in total) when I adjusted mine. I then adjust the delay to about 10/15min. Going through this is to make the fan stop 10min after the room returns normal humidity level.Some believes the ring that came with the fan was to cover the cable hole when it is not used, but I think the ring is actually for fixing the flexible duct on the back of the fan so that it won’t move or comes off during installation. I am unable to use it, as the hole in the wall is too small and doesn’t allow it.My order was shipped from “DE”, which I believe it is Germany. The made is quite solid and the instruction manual seems to be in German only. It is quite easy to figure out what is what with the pictures printed.I am not sure it is due to the standard difference between the UK and Germany or just between manufacturers, the four holes for fixing the fan is at different positions to the previous two fans I had from UK shops.In general, it feels high quality and well designed. It is not noisy given the flow. The humidity sensor works well (so far). It is reasonably priced compared to another well-known German brand (starting B) with same functionality.I would recommend it.

Fonction très bien

Après 6 mois d'utilisation (très peu utilisé), le capteur d'humidité déconne. Le ventilateur tourne de manière continue sans l'arrêter. Je déconseille

Tut was er soll - das Kabel muss jedoch selbst montiert werden. Die Anleitung ermöglicht auch Ungeübten eine erfolgreiche Montur.

Funktioniert und macht was er soll.Im Anhang meine Messwerte. Zieht am Einlass mit 6,8 m/s und macht ca. 61dBA im Betrieb. 34dB sind angegeben. Wobei zu beachten ist - dB ≠ dBA.