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  2. Electromagnetic door holder - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_door_holder

    The door holders release, allowing the doors to close automatically using door closers. [1] [2] The electric power to keep the doors open is typically 12 VDC, 24 VDC (common), 24 VAC, 120 VAC, or 240 VAC. The closed doors may or may not mechanically latch or lock in the closed position. Many fire doors do not lock, to allow building occupants ...

  3. Amazon Fire - Wikipedia

    en.wikipedia.org/wiki/Amazon_Fire

    Kindle Fire showing components, back cover removed. The Amazon Fire, formerly called the Kindle Fire, is a line of tablet computers developed by Amazon.Built with Quanta Computer, the Kindle Fire was first released in November 2011, featuring a color 7-inch multi-touch display with IPS technology and running on Fire OS, an Android-based operating system.

  4. Electronic lock - Wikipedia

    en.wikipedia.org/wiki/Electronic_lock

    When unlocking, insert the electronic key into the keyhole of the passive electronic lock, that is, the three contacts on the head end of the key are in contact with the three contacts on the passive electronic lock. At this time, the key will supply power to the passive electronic lock, and at the same time, read the ID number of the passive ...

  5. Amazon’s $75 Fire HD Tablet Has Features That Apple and ...

    www.aol.com/amazon-75-fire-hd-tablet-052000432.html

    Whether for work or streaming, Amazon’s Fire Tablets offer up huge value, especially when compared to Apple’s iPad or the Samsung Galaxy Tab. Case in point: …

  6. Amazon's newest and best Fire tablet is just $40 for Prime Day

    www.aol.com/lifestyle/amazon-fire-tablet-sale...

    Amazon's latest version of its highest-rated Fire tablet is on sale for just $40 before fall Prime Day ... the new Fire 7 tablet provides 10 hours of battery life on a single charge compared to ...

  7. Electromagnetic lock - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_lock

    The first modern direct-pull electromagnetic lock was designed by Sumner "Irving" Saphirstein in 1969 [6] [7] [8] for initial installation on doors at the Montreal Forum. [9] Fire concerns by local authorities in locking the doors at the Forum prompted management to find a locking solution that would be safe during a fire incident.

  8. Fire OS - Wikipedia

    en.wikipedia.org/wiki/Fire_OS

    developer.amazon.com /docs /fire-tv /fire-os-overview.html Fire OS is an Android -based operating system developed by Amazon for their hardware devices . Fire OS includes a customized user interface primarily centered on content consumption, and heavy ties to content available from Amazon's storefronts and services.

  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!