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  2. Electronic lock - Wikipedia

    en.wikipedia.org/wiki/Electronic_lock

    A quick demonstration of an electronic door lock. An electronic lock (or electric lock) is a locking device which operates by means of electric current. Electric locks are sometimes stand-alone with an electronic control assembly mounted directly to the lock. Electric locks may be connected to an access control system, the advantages of which ...

  3. Electromagnetic lock - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_lock

    Electromagnetic lock. This article is about a mechanism to hold a door closed. For the mechanism to hold a door open, see Electromagnetic door holder. For a lock utilizing magnetism and a key, see Magnetic keyed lock. An electromagnetic lock, magnetic lock, or maglock is a locking device that consists of an electromagnet and an armature plate.

  4. Reed switch - Wikipedia

    en.wikipedia.org/wiki/Reed_switch

    Reed switch. (from top) Single-pole reed switch, four-pole reed switch and single-pole reed relay. Scale in centimeters. Reed switch, contact detail. Commonly-used circuit symbol. Operation of the reed switch. The reed switch[i] is an electromechanical switch operated by an applied magnetic field. It was invented in 1922 by professor Valentin ...

  5. Electromagnetic door holder - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_door_holder

    An electromagnetic door holder (electromagnetic door holder and release or hold-open device, sometimes informally called a mag hold open or electric doorstop) is a simple electromechanical mechanism which can be used to hold a fire door or security door open until given a signal to release. A fire alarm control panel or a similar emergency ...

  6. Electric strike - Wikipedia

    en.wikipedia.org/wiki/Electric_strike

    Electric strike with monitoring contact. An electric strike is an access control device used for door frames. It replaces the fixed strike faceplate often used with a latch (also known as a keeper). Like a fixed strike plate, it normally presents a ramped or beveled surface to the locking latch allowing the door to close and latch just like a ...

  7. Sabbath mode - Wikipedia

    en.wikipedia.org/wiki/Sabbath_mode

    Sabbath mode. Sabbath mode, also known as Shabbos mode (Ashkenazi pronunciation) or Shabbat mode, is a feature in many modern home appliances, including ovens, [1] dishwashers, [2] and refrigerators, [3] which is intended to allow the appliances to be used (subject to various constraints) by Shabbat-observant Jews on the Shabbat and Jewish ...

  8. Door closer - Wikipedia

    en.wikipedia.org/wiki/Door_closer

    A door closer is a mechanical device that regulates the speed and action of a door ’s swing. [1] Manual closers store the force used to open the door in some type of spring and reuse it to close the door. Automatic types use electricity to regulate door swing behavior. Door closers can be linked to a building's fire and security alarm systems.

  9. Mortise lock - Wikipedia

    en.wikipedia.org/wiki/Mortise_lock

    Mortise lock. The two main parts of a mortise lock. Left: the lock body, installed in the thickness of a door. This example has two bolts: a sprung latch at the top, and a locking bolt at the bottom. Right: the box keep, installed in the doorjamb. A mortise lock (also spelled mortice lock in British English) is a lock that requires a pocket ...