Door Bells | Doorbells Drawings & Dimensions

A Door Bell (doorbell) is a device that is used to signal a person inside a building that someone is at the door. It typically consists of a button that, when pressed, activates a chime or other sound inside the building to alert the occupants that someone is outside.

门铃（doorbell）乃一种用于向建筑内之人传达门外有人拜访之信号的装置。通常由一个按钮构成，按之，可在建筑内引发铃声或其他声响，以此警示居者门外有人造访。