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  2. ADT Inc. - Wikipedia

    en.wikipedia.org/wiki/ADT_Inc.

    ADT began to expand into new areas, such as fire alarms and security alarms, between 1910 and 1930, but was kept separate from AT&T's Holmes alarm business. ADT became a publicly traded company in the 1960s. [12] In 1964, ADT was found to be a monopoly in restraint of trade. It was shown to provide almost 80% of the central station alarm ...

  3. Standards for Alarm Systems, Installation, and Monitoring

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

    The alarm transmission methods covered under UL 365 can be categorized under standard line security or encrypted line security. The systems are required to operate within the limits of Class 2 remote control and signal circuits as defined by the National Electrical Code, NFPA 70. [15]

  4. Duress code - Wikipedia

    en.wikipedia.org/wiki/Duress_code

    Entering the code when under duress from an assailant can trigger a silent alarm, alerting police or security personnel in a covert manner. The implementation of this feature has not been without controversy, as it has been claimed to lead to false alarms. [1] A similar mechanism, SafetyPIN, has been proposed for use in ATMs.

  5. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    Code 1: A time critical event with response requiring lights and siren. This usually is a known and going fire or a rescue incident. Code 2: Unused within the Country Fire Authority. Code 3: Non-urgent event, such as a previously extinguished fire or community service cases (such as animal rescue or changing of smoke alarm batteries for the ...

  6. Fire alarm notification appliance - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_notification...

    This pattern, which is also used for smoke alarms, is named the Temporal-Three alarm signal, often referred to as "T-3" or "Code-3" (ISO 8201 and ANSI/ASA S3.41 Temporal Pattern) and produces an interrupted four count (three half second pulses, followed by a one and one half second pause, repeated for a minimum of 180 seconds).

  7. Tyco Integrated Security - Wikipedia

    en.wikipedia.org/wiki/Tyco_Integrated_Security

    Tyco Integrated Security is a business unit of Tyco International.It is a company specializing in electronic security products, installation and services. The company's principal place of business in the U.S. is Boca Raton, Florida; and Mississauga, Ontario in Canada with over 10,000 employees and nearly 200 offices throughout North America.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    Wireless home alarm system control panel A house alarm. A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school.

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