Finally, a wireless doorbell without amnesia!

The Etekcity radio doorbell set consists of a transmitter and two receivers. One of them can simply be plugged into an electrical outlet and powered in this way permanently with electricity, the other receiver is battery powered for complete mobility.
It can also always taken in the garden, the cellar or wherever, as long as the range of the device is not exceeded or severely restricted by massive reinforced concrete walls.
An easy to use German-language manual is included, and this should also be taken to consult in order to program a ringtone.
For the two receivers to different sounds in four volume levels can be adjusted.
A peculiarity of this bell is that the settings after a power outage or after removing the batteries are still stored and does not need to be reselected.
With 52 different melodies and tones that can namely ever take a while.
The choice of ring tones is quite mixed, from Big Ben to pop songs, classical music, carols, dogs barking and cuckoo call is everything.
The transmitter can be for my feeling a bit too easy to open - I need to at least no screwdriver. Through gaps in the board of the transmitter this can be fixed with the screws or optionally with the attached adhesive pad also.
The mobile receiver can also be mounted either by two notches on its back with screws for example on a different floor to serve as a bell.
The range is very good; in my house (120sqm on two floors and a basement including) the system works everywhere.

Conclusion: Finally a wireless doorbell that remembers the preset ringtones and does not have to be completely re-programmed after a power failure