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  2. Baby gate - Wikipedia

    en.wikipedia.org/wiki/Baby_gate

    There are hardware-mounted gates that can be customized to fit wide and irregularly shaped openings, as well as mesh retractable gates that roll out of the way. Safety gates are used to help prevent a child from accessing an area of a house, especially the stairway, or to allow an exterior door to be open for ventilation while restricting ...

  3. Safety barrier - Wikipedia

    en.wikipedia.org/wiki/Safety_barrier

    A safety barrier is a component which prevents passage into a dangerous area. It is commonly used to mitigate risk in the Hazard-Barrier-Target model, as studied in safety science. Work Safe Victoria (an Australian organization) defines a Safety Barrier as a device that: [1] physically separate the work area and the traveled way,

  4. Rotary combination lock - Wikipedia

    en.wikipedia.org/wiki/Rotary_combination_lock

    The dial is connected to an internal mechanism, usually containing three separate wheels with notches, called gates. Each wheel must be aligned to allow a fence to drop into the gates, releasing the lever that holds the lock in place, allowing the lock to open. Generally, this is accomplished by moving the dial to three (or more) positions ...

  5. Optical turnstile - Wikipedia

    en.wikipedia.org/wiki/Optical_turnstile

    Drop Arm style optical turnstiles. An optical turnstile is a physical security device designed to restrict or control access to a building or secure area. Optical turnstiles are usually a part of an access control system, which also consists of software, card readers, and controllers.

  6. Electric gate - Wikipedia

    en.wikipedia.org/wiki/Electric_gate

    The safety of an automated gate is an important consideration, in the European Union, automated gate safety is specified by a series of European Normalisations. An automated gate that has not been fitted with safety in mind can potentially become a major hazard particularly to untrained users.

  7. Platform screen doors - Wikipedia

    en.wikipedia.org/wiki/Platform_screen_doors

    However, these gates are less effective than full platform screen doors in preventing people from intentionally jumping onto the tracks. [14] These gates were first [clarify] in practical use by the Hong Kong MTR on the Disneyland Resort line for the open-air station designs. Most half-height platform edge door designs have taller designs than ...

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