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  2. Electronic lock - Wikipedia

    en.wikipedia.org/wiki/Electronic_lock

    The software is used to set and modify the data of each key and lock. [2] Using this type of key and lock control system does not need to change user habits. In addition, compared with the previous mechanical device, its advantage is that only one key can open multiple locks instead of a bunch of keys like the current one.

  3. Trapped-key interlocking - Wikipedia

    en.wikipedia.org/wiki/Trapped-key_interlocking

    A key exchange block may only hold and release keys and may not have a bolt to interlock process equipment, or may be part of the interlock of a particular machine or device. This is a transfer block, part of a trapped-key interlock system. It does not have a bolt to stop operation of a device, but holds and releases other keys.

  4. Key switch - Wikipedia

    en.wikipedia.org/wiki/Key_switch

    A key switch (sometimes called a keyswitch or lock switch) is a key-operated switch. [1] Key switches are used in situations where access to the switch's functions needs to be restricted. [2] [3] Key switches are available as components with solder connections, and are available with a variety of ampere ratings. They may use tubular or other ...

  5. Combination lock - Wikipedia

    en.wikipedia.org/wiki/Combination_lock

    A Wordlock letter combination lock.. A combination lock is a type of locking device in which a sequence of symbols, usually numbers, is used to open the lock. The sequence may be entered using a single rotating dial which interacts with several discs or cams, by using a set of several rotating discs with inscribed symbols which directly interact with the locking mechanism, or through an ...

  6. Keycard lock - Wikipedia

    en.wikipedia.org/wiki/Keycard_lock

    A keycard lock is a lock operated by a keycard, a flat, rectangular plastic card. The card typically, but not always, has identical dimensions to that of a credit card , that is ID-1 format . The card stores a physical or digital pattern that the door mechanism accepts before disengaging the lock.

  7. Night latch - Wikipedia

    en.wikipedia.org/wiki/Night_latch

    A night latch (or night-latch or nightlatch) is a lock that is fitted on the surface of a door; it is operated from the exterior side of the door by a key and from the interior (i.e. "secure") side of the door by a knob. [1] [2] [3]

  8. Category:Locks (security device) - Wikipedia

    en.wikipedia.org/wiki/Category:Locks_(security...

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  9. Magnetic keyed lock - Wikipedia

    en.wikipedia.org/wiki/Magnetic_keyed_lock

    A magnetic keyed lock or magnetic-coded lock is a locking mechanism whereby the key utilizes magnets as part of the locking and unlocking mechanism. Magnetic-coded locks encompass knob locks, cylinder locks , lever locks , and deadbolt locks as well as applications in other security devices.

  1. Related searches which of the following is not a locking device for a key operated lock screen

    electromagnetic locktrapped key interlocking devices
    electronic lock wikipedia