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
Magicfly Portable Wireless Doorbell Kit Remote Button Operating at 1000 ft Range with Over 50 Chimes, No Batteries Required for Receiver [2 Transmitter 2 Receiver], Black
1byone Easy Chime Wireless Doorbell Kit, 1 Receiver & 1 Push Button with Sound and LED Flash, 36 Melodies to Choose, Battery Operated