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  2. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    In the event of an alarm, the premises control unit contacts a central monitoring station. Operators at the station take appropriate action, such as contacting property owners, notifying the police, or dispatching private security forces. Such alerts transmit via dedicated alarm circuits, telephone lines, or the internet.

  3. Physical security - Wikipedia

    en.wikipedia.org/wiki/Physical_security

    Integration allows doors to unlock when authorized. Request to exit devices - These allow free egress through an access point without triggering an alarm. Buttons, motion detectors, and other sensors are commonly used. Alarms - Unauthorized access attempts or held/forced doors can trigger audible alarms and alerts.

  4. Annunciator panel - Wikipedia

    en.wikipedia.org/wiki/Annunciator_panel

    An annunciator panel, also known in some aircraft as the Centralized Warning Panel (CWP) or Caution Advisory Panel (CAP), is a group of lights used as a central indicator of status of equipment or systems in an aircraft, industrial process, building or other installation.

  5. Ring (company) - Wikipedia

    en.wikipedia.org/wiki/Ring_(company)

    In November 2013, Ring was founded as Doorbot by Jamie Siminoff. Doorbot was crowdfunded via Christie Street, and raised US$ 364,000, more than the $250,000 requested. [1] [4] [5] Siminoff's team envisioned the product's concept as an "alarm system literally turned inside out" in comparison to other security systems, describing it as a "pre-crime" system. [6]

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  7. Doorbell - Wikipedia

    en.wikipedia.org/wiki/Doorbell

    Doorbell mechanism from 1884 in Andrássy Avenue, Budapest Antique mechanically operated shop doorbell on a torsion spring. William Murdoch, a Scottish inventor, installed a number of his own innovations in his house, built in Birmingham in 1817; one of these was a loud doorbell, that worked using a piped system of compressed air. [1]

  8. Additional security features in AOL Mail

    help.aol.com/articles/additional-security...

    If we detect that an email address you receive replies to is anything other than the one you're sending the message from, we'll let you know with a little alert on the top of the message. If you've set up the reply-to function in your email, then there are no worries! But if you didn't set that up, you should secure your account immediately.

  9. AOL Mail

    mail.aol.com

    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!

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