burglar alarm

American  

noun

1. an automatic device for giving an alarm when a window, door, safe, etc., is opened or tampered with, as by a burglar.

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Etymology

Origin of burglar alarm

First recorded in 1830–40

Example Sentences

Many also installed camera systems and burglar alarms.

From Los Angeles Times

He rigged a burglar alarm with foam so it made a loud clattering sound.

From Los Angeles Times

He’s jury-rigged a burglar alarm with foam so it makes a clattering sound loud enough for the neighbor’s Ring camera to pick up, he said.

From Los Angeles Times

The next morning a builder arrived to work at the house, heard the burglar alarm and looked through a window.

From BBC

Although the campus gets locked up tight, it lacks a burglar alarm, and security cameras have arrived but have not yet been installed.

From Los Angeles Times