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
WenTop Wireless Doorbell Kit Digital Programmable Door Chime Operating at 1000ft with 2 Receivers and 1 Push Button Door Bell for Home, Apartment, Kids Room, Bedroom, Doors - Black
SAFEBAO Wireless Doorbell, Waterproof Plug-in Door Bells with 1 Touch Sensor Button and 1 Door Chime for Home Office (Black 1V1)