I wanted to upgrade to the latest, supposedly quieter state of the art, and have ordered this model N + per. Because it is advertised, among other things with the following: "Extremely silent compact gear (about 30% quieter than the model type K)".
Unwrapped, connected, result: The model is not 30% quieter than my old controller, but even louder and more unpleasant in noise. One also has the feeling that the heating now acts like a sound box and the sound intensified. Each rule noise is audible and annoying. Now, of course, is not always regulated, but only hours apart. Nevertheless, you can still hear it even with running TV when it's not too loud approaching in the shipment.
The ergonomics has not exactly improved (smaller bezel and minor keys), and the functions are the same. The only perceived advantage - the lower control noise - thus completely fizzled out.
Actually I would have made use of the right of withdrawal, I did not have the return costs themselves. Thus, it really is not worth it at the low price.
Conclusion: The model may be new, but it is not quiet and not quieter than my predecessor. I see no advantage over older controllers. The price is cheap, the functions are all as usual, that is not enough with great difficulty for the third star, but more due to the generally sound unfortunately.