Appearance / processing / equipment:
The doorbells look just like the picture of, very stylish and the blue circle lights up (in certain places).
The ringing see very high quality made, there are no bad edges or protruding material is - also there is no lack of quality or noise when shaken.
What you find in the package, are 1 station, which is intended for making a call, then another 2 receiver - one can be plugged into the socket, the other operated 3x AAA batteries, which are not included.
There are also screws, so you can hang up the receiver with batteries.
1) Manual
The instructions are in German and explains how you can change the melodies and stores, so that they also play when the transmitter is pressed.
2.) Range
For me it is just 20-30 meters (depending on the receiver) and it works without any interference, intervene even 1 PC, Wi-Fi, ...
3.) melodies
There are 52 melodies of popular songs to animal sounds is everything. I have resigned myself to a nice song that I like extremely.
My Conclusion:
The doorbell is inexpensive, offers a stylish and modern look. You get 1 transmitter and 2 receivers, which can be infected by batteries or by electricity and it lets you equip with a 2-storey house with two floors of the bell for the price. The operation is very simple and the range makes for me no problems (20-30m).
Also, there are 4 different volume levels, which may be very good, depending on where the recipient is located.
Otherwise, I do not know how the doorbell behaves in the coming weeks and months when weather and if it withstands the water, but I will add this later!