You can set up your phone to play your favorite song when somebody calls, and now with the MP3 Radio Doorbell you can magnify the experience when someone comes to call at your door.
The wall-mounted gadget is equipped with an SD card reader, so that you can load a selection of tracks into the system. As such, nothing is stopping you from making your own recordings, the way you might have for your mobile phone. The device comes preset with 32 polyphone sound effects so you can mix up your audio guest announcements. The only thing that might improve the MP3 Radio Doorbell is if it was configured with facial recognition software so that different visitors would be introduced with distinctive songs.