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  2. Driveway alarm - Wikipedia

    en.wikipedia.org/wiki/Driveway_alarm

    Driveway alarms come in both wired and wireless packages. Infrared and rubber hose systems are generally sold as wireless units while magnetic probe systems are equally available as hard wired and wireless systems. Choosing between wireless or wired systems is typically decided by the environment the unit is being installed in.

  3. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    Driveway alarm systems can be combined with most security and automation systems. They are designed to alert residents to unexpected visitors, intruders, or deliveries arriving at the property. Types of driveway sensors include magnetic and infrared motion sensors. Driveway alarms can be found in both hard-wired and wireless systems.

  4. Standards for Alarm Systems, Installation, and Monitoring

    en.wikipedia.org/wiki/Standards_for_Alarm...

    The Underwriters Laboratories' UL 365 is a safety standard that governs the construction, performance, and maintenance of police station-connected burglar alarm units and systems. These systems are designed primarily for use in mercantile premises, including mercantile safes and vaults, as well as bank safes and vaults.

  5. Induction loop - Wikipedia

    en.wikipedia.org/wiki/Induction_loop

    An induction or inductive loop is an electromagnetic communication or detection system which uses a moving magnet or an alternating current to induce an electric current in a nearby wire. Induction loops are used for transmission and reception of communication signals, or for detection of metal objects in metal detectors or vehicle presence ...

  6. Alarm monitoring center - Wikipedia

    en.wikipedia.org/wiki/Alarm_monitoring_center

    An alarm monitoring center, central monitoring station (also known as "CMS" or wholesale central station), or alarm receiving center (also known as ARC) [1] is a company that provides services to monitor burglar, fire, and residential alarm systems. The Central Monitoring Station may also provide watchman and supervisory services.

  7. Electromagnetic door holder - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_door_holder

    An electric current typically energizes the electromagnet to attract and hold the steel plate, keeping the door open. Unlike electromagnetic locks, the magnetic attraction of an electromagnetic door holder is usually weak enough that it can be manually overpowered at any time by anyone, allowing the door to close. [citation needed]

  8. Alarm management - Wikipedia

    en.wikipedia.org/wiki/Alarm_management

    DCS alarm systems are notoriously easy to change and generally lack proper security. Methods are needed to ensure that the alarm system does not drift from its rationalised state. Step 6: Real-time alarm management. More advanced alarm management techniques are often needed to ensure that the alarm system properly supports, rather than hinders ...

  9. Alarm device - Wikipedia

    en.wikipedia.org/wiki/Alarm_device

    alarms in an operation and maintenance (O&M) monitoring system, which alerts an operator to a malfunction of a particular part of the system under monitoring. first-out alarm; safety alarms, which go off if a dangerous condition occurs. Common public safety alarms include: civil defense siren, also known as tornado sirens or air raid sirens