alarm system


Cars & Driving

  • noun a theft protection system, which typically provides the following functions: exterior and interior protection; locking the boot and bonnet; making the ignition system inoperative


  • An installed electrical system devised to protect against unauthorized entry or fire by giving off an audible and/or visual signal.


  • An assembly of devices and equipment that will detect, then inform of, conditions requiring immediate action. These circumstances include fires, equipment failures, and unauthorized entry, among others. The three main components are: an input device, such as a smoke detector, a processing unit, such as the alarm control panel, and an output device, such as a siren.