alarm system
Học thuậtThân thiện
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
- a device that signals the occurrence of some undesirable event