Part 1: Lured by the design and the previous 5-star rating, but was not really meaningful, I bought this plant. After relatively simple professional installation (as Dipl.-Ing, who performed for many more complex electrical installations), we have taken part in the operation. Approximately three hours the system was working properly. After that no more feature was available. Thus, the good part is after three hours already a warranty claim. Whether the inner workings of this chic area is only "cheap electronics scrap" from China, remains to be seen when the replacement device is installed. Therefore, the first part is even worth only three stars.
2nd part: Warranty Exchange was simple. The new device now works for over a week and ideally: perfect picture (OK not HD quality, but perfectly adequate for the purpose - even at night and in color). The lens captures a very wide angle - very well.
Ringtones can be selected to the volume is quite enough for our house. The voice quality is impeccable. So the device is fun - I hope he will stay with us long. Therefore, now increased to 5 star.