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Doorbell
01
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a bell operated by a button outside a house or apartment that makes a sound when pushed, particularly to inform the inhabitants inside
What is a "doorbell"?
A doorbell is a device installed near the entrance of a home that alerts residents when someone is at the door. Typically activated by pressing a button, doorbells produce a sound, such as a chime or ring, to notify occupants of a visitor's presence. They can come in various styles and designs, ranging from simple mechanical bells to modern wireless systems with video capabilities. Some doorbells may also include features like intercom systems, motion sensors, or smartphone connectivity, allowing homeowners to see or communicate with visitors from a distance. Doorbells enhance convenience and security by providing a way to announce visitors before they enter.
例子
They replaced the old doorbell with a new smart model that sends alerts to their phones.
She rang the doorbell and waited for someone to answer.
The doorbell was broken, so visitors had to knock loudly.
An electromechanical doorbell combines electrical wiring with mechanical components.
The doorbell chimed as guests arrived for the party.
