Question

What is Doorbell ??????​

Answer 1

Answer:

a bell on the outside of a house which you ring when you want to go in

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Answer 2

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A doorbell is a signaling device typically placed near a door to a building's entrance. When a visitor presses a button the bell rings inside the building, alerting the occupant to the presence of the visitor. ... Modern doorbells often incorporate intercoms and miniature video cameras to increase security.