The Elicent Elegance Smart 120mm humidity sensor fan can sense humidity and can adjust from 40% to 90% relative humidity. Air flow capacity is up to 165m3/h.
Combine this fan with a door vent to significantly improve its performance, which you can also find in our store. In order for any fan to work, it needs to easily get air from somewhere to move humidity out to prevent mould.
A standard bathroom is around 3m x 4m x 2.4m = 28.8m3
If you provide this fan with a door vent, the bathroom Air change rate will be conservatively 7-10 minutes.