The unit now works several hours (5-15) a day, which is no problem thanks to the low energy draw. Also the noise I kept within limits (around the level of a normal bathroom Air deduction), but it can be heard clearly.
The effect (and I know that sounds weird) underperformed my expectations, although the desired effect occurred:
+ The misted mirror is much faster free again
+ Is no more condensation accumulates on the window panes in the rest of the apartment
+ The mold does not come back
- The amount of water that pulls the device out of the air is quite low (I have the small tank of the device, in spite of long maturities only about once a week empty).
In conclusion remains to say that with me, as with many other not as described a device of Elro but by Conrad Elektronik was delivered, but this makes no difference, as the two devices are identical - so do not scare.