Designer Li Jian felt pretty bored with the same old doorbells, so he came up with this cool interactive doorbell concept: the Pianobell.
As the name suggests, the Pianobell is inspired by the piano musical instrument. Rather than play a preset tune, the Pianobell allows your visitors to play a short musical piece to let you know they are at the door.
It's a pretty cool concept. Maybe we can have even larger versions with more keys for elaborate pieces.
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