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  2. NFPA 72 - Wikipedia

    en.wikipedia.org/wiki/NFPA_72

    The NFPA 72 "covers the application, installation, location, performance, inspection, testing, and maintenance of fire alarm systems, supervising station alarm systems, public emergency alarm reporting systems, fire warning equipment and emergency communications systems (ECS), and their components."

  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. Fire alarm notification appliance - Wikipedia

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

    According to NFPA 72-2010, section 18.4.5.3*, audible appliances provided for sleeping areas to awaken occupants shall produce a mid frequency alarm signal that complies with the following (effective January 1, 2014): (1) The alarm signal shall be a square wave or provide equivalent awakening ability.

  5. Fire alarm system - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_system

    New codes and standards introduced around 2010, especially the new UL Standard 2572, the US Department of Defense's UFC 4-021-01 Design and O&M Mass Notification Systems, and NFPA 72 2010 edition Chapter 24, have led fire alarm system manufacturers to expand their systems voice evacuation capabilities to support new requirements for mass ...

  6. Managed facilities-based voice network - Wikipedia

    en.wikipedia.org/wiki/Managed_facilities-based...

    According to NFPA 72 2010, 3.3.141, [1] an MFVN is defined simply as: A physical facilities-based network capable of transmitting real time signals with formats unchanged that is managed, operated, and maintained by the service provider to ensure service quality and reliability from the subscriber location to public switched telephone network (PSTN) interconnection points or other MFVN peer ...

  7. Florida homeowner shoots and kills one intruder, injures ...

    www.aol.com/news/florida-homeowner-shoots-kills...

    A Florida man opened fire on two home intruders, killing one of them, on Thursday night, authorities said. The Lakewood Ranch area homeowner saw two masked men on his motion-activated home ...

  8. Donald Trump Is TIME's 2024 Person of the Year - AOL

    www.aol.com/donald-trump-times-2024-person...

    M ar-a-Lago was quiet three days before Thanksgiving. Donald Trump’s Moorish palace seemed all but deserted late that morning, the seaside estate’s cavernous living room traversed ...

  9. Fire alarm control panel - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_control_panel

    Coded panels were the earliest type of central fire alarm control, and were made during the 1800s to the 1970s. A coded panel is similar in many ways to a modern conventional panel (described below), except each zone was connected to its own code wheel, which, depending on the way the panel was set up, would either do sets of four rounds of code until the initiating pull station was reset ...

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