Definition

Noun: A device or set of devices designed to detect and signal the occurrence of an unwanted or dangerous event, such as a break-in, fire, or other emergency.

Usage

An "alarm system" is a security or safety mechanism. It typically consists of sensors, a control panel, and an alerting device (like a siren or strobe light). The term is used to describe the complete setup installed in a building, vehicle, or area for protection.

Examples

• The store installed a new alarm system after the burglary.
• When the smoke detector sensed heat, it triggered the building's alarm system.
• A sophisticated alarm system monitors for glass breakage and motion.

Advanced Usage

• "To arm/disarm an alarm system": To activate or deactivate the system's alert functions, typically using a code or key.
  • Remember to arm the alarm system when you leave the house.
• "False alarm from an alarm system": When the system is triggered without an actual emergency.
  • The strong wind caused a false alarm from the perimeter alarm system.

Variants and Related Words

• Burglar alarm (system): A specific type of alarm system designed to detect unauthorized entry.
• Fire alarm (system): A specific type of alarm system designed to detect and warn of fire.
• Security system: A broader term that may include alarm systems along with other features like cameras and access controls.
• Alarm (noun): The signal (sound, light) produced by the system, or a feeling of fear. (e.g., )
• Alarm (verb): To cause fear or warn. (e.g., )

Synonyms

• Warning system
• Alert system
• Security apparatus

Related Phrases

• Alarm goes off: Describes when the alarm system activates and produces its signal.
  • If the alarm goes off, leave the building immediately.
• Connected to a monitoring service: Describes an alarm system that automatically alerts a central security company when triggered.
  • Their home alarm system is connected to a monitoring service 24 hours a day.

Noun

1. a device that signals the occurrence of some undesirable event