Wow, this piano doorbell concept, while cool, would probably get really annoying really fast. I mean how many people are coming to your door that can actually play any sort of decent tune on the piano and how many songs can you really play with just five keys anyway? Neat idea in theory but probably not well suited for anything other than a piano school or piano teacher’s house.
labexp via Freshome
SadoTech Model CX Wireless Doorbell with 1 Receiver Plugin and 2 Remote Buttons Operating at over 500-feet Range with Over 50 Chimes, No Batteries Required for Receiver, (White), Fixed Code C Series
Homasy Wireless Doorbell with 1000-feet, 52 Chimes, IP55 Waterproof Transmitter, 4-Level Volume, No Batteries Required for Receiver, White
RockJam 561 Electronic 61 Key Digital Piano Keyboard SuperKit with Stand, Stool, Headphones, & Includes Piano Maestro Teaching App with 30 Songs