After I tested some Stadler Oskar humidifier and eigenetlich all were defective (fans jammed, hygrometer showed conflicting values) I ordered this humidifier. I really wanted to have a humidifier or vaporizer without nebulizer because they have a very high risk of contamination with. Today I connected the Stylies and am - so far - satisfied. In contrast to the Stadler you need to buy more expensive filters. In addition, the integrated hygrometer appears to measure approximately what my external hygrometer reads (+/- 3%). Very handy, I also think that the unit displays the current measured humidity in%. Point I as a target, for example a 45%, the device displays a short time later at the currently measured Luftfechtigkeit, eg 40%. So you can roughly estimate how much is still missing.
The disadvantage compared to Oskar form devices 1. I find the design and the volume of the second fan. At level two, it is no longer rustles softly and pleasantly, but I can live with it. Oh yes, the device apparently in China come from the same manufacturer as the Stadler who are Silver Cube for disinfection identical.