Doorbell
signaling device placed near an entry door to a building
This article relies largely or entirely on a single source. (March 2024) |
A doorbell is a device which is typically installed to or near a door. When a visitor presses a button, the bell rings inside the building, alerting the presence of the visitor.
In modern technology, a button is pressed completing a circuit which in response makes a sound.
History change
Older doorbells were fully mechanical. Newer electrical doorbells were installed by wires and use a push-button to activate the sound. The latest doorbells have wireless connections although older ones may be wired.[1]
References change
- ↑ info@lheinc.com (2015-11-18). "The History of the Doorbell: Who Invented It? Find Out!". 1800doorbell. Retrieved 2022-12-31.
Other websites change
Media related to Doorbell at Wikimedia Commons
