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  2. Safe - Wikipedia

    en.wikipedia.org/wiki/Safe

    The security is calculated by using ratings of tools and the attack time. The result is expressed in resistance units (RU). [25] EN 14450 is a testing standard for secure cabinets and strongboxes. The standard covers products meant for purposes where the security resistance required is less than that of EN 1143–1. [26]

  3. Faraday cage - Wikipedia

    en.wikipedia.org/wiki/Faraday_cage

    Animation showing how a Faraday cage (box) works. When an external electrical field (arrows) is applied, the electrons (little balls) in the metal move to the left side of the cage, giving it a negative charge, while the remaining unbalanced charge of the nuclei give the right side a positive charge. These induced charges create an opposing ...

  4. Safe deposit box - Wikipedia

    en.wikipedia.org/wiki/Safe_deposit_box

    Safe deposit boxes inside a Swiss bank. Safe deposit vault in Joplin, Missouri after the 2011 Joplin tornado, remaining intact despite the destruction of the bank that housed it. A safe deposit box, commonly referred to incorrectly as a safety deposit box, is an individually secured container, usually held within a larger safe or bank vault.

  5. Bank vault - Wikipedia

    en.wikipedia.org/wiki/Bank_vault

    Modern bank vaults are typically made of reinforced concrete and steel, with complex locking mechanisms and security systems. This article covers the design, construction, and security features of bank vaults. This large 24-bolt Diebold vault door at the Winona National Bank was built in the early 1900s. On the right is the back side of the ...

  6. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    In a modern device, there are typically one or more computer circuit boards inside a metal enclosure. Many newer networks often use sealed plastic boxes. Some also have their control units built-into the keypad or other human-machine interface. Sensors: In a security alarm, some sensors detect intrusions. Sensors' locations are at the perimeter ...

  7. Knox Box - Wikipedia

    en.wikipedia.org/wiki/Knox_Box

    A Knox Box is a small, wall-mounted safe that holds building keys for fire departments, emergency medical services, and sometimes police to retrieve in emergency situations. [ 1 ] [ 2 ] The term "Knox-Box" is a brand name for such products produced by the American company Knox Associates, which does business as The Knox Company.

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