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  2. 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.

  3. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    A security alarm is a system designed to ... Dual signaling is now firmly regarded as the standard format for alarm signaling and is duly specified by all of the ...

  4. Specific Area Message Encoding - Wikipedia

    en.wikipedia.org/wiki/Specific_Area_Message_Encoding

    Specific Area Message Encoding (SAME) is a protocol used for framing and classification of broadcasting emergency warning messages. It was developed by the United States National Weather Service for use on its NOAA Weather Radio (NWR) network, and was later adopted by the Federal Communications Commission for the Emergency Alert System, then subsequently by Environment Canada for use on its ...

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  7. Duress code - Wikipedia

    en.wikipedia.org/wiki/Duress_code

    An alarm system with a keypad; entering the duress code and pressing OFF disarms the system normally but notifies police. Some home and property alarm systems have duress PINs, where the last two digits of the reset code are switched around.

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  9. Trump invites China's Xi to inauguration, experts call it ...

    www.aol.com/news/trump-invites-chinas-xi-other...

    On Wednesday, China's U.S. Ambassador Xie Feng read a letter from Xi to a U.S.-China Business Council gala in Washington, in which the Chinese leader said Beijing was prepared to stay in ...