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  2. Electromagnetic lock - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_lock

    Filler plates are also used to provide a large, flat mounting area on the door frame when the electromagnet is larger than the available mounting space on the door frame due to the frame's geometry. The magnetic lock should always be installed on the secure side of the door. Most installations are surface mounted. For safety, magnetic lock ...

  3. Time-delay combination locks - Wikipedia

    en.wikipedia.org/wiki/Time-delay_combination_locks

    This will allow the safe to be opened when the batteries are changed after the pre-set time if the correct code is entered. Some electronic combination locks with a time-delay feature require the code to be entered twice: once to start the timer, and a second to unlock and open the safe entered after the delay period has expired.

  4. Electromagnetic door holder - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_door_holder

    A simple electromagnetic door holder consists of a strong electromagnet, usually attached to a wall or mounted in a floor pedestal enclosure, next to the door it controls. The mechanism may be mounted near the floor, at the upper corner of the open door, or at any convenient height along the latch edge (away from the hinged edge).

  5. Smart refrigerator - Wikipedia

    en.wikipedia.org/wiki/Smart_refrigerator

    This kind of refrigerator is often equipped to determine itself whenever a food item needs to be replenished. [2] This is still partly managed by human involvement but the next evolution of smart technology is the intelligent refrigerator, which incorporates inventory tracking for all items inside, along with a seamless payment system.

  6. Magnetic keyed lock - Wikipedia

    en.wikipedia.org/wiki/Magnetic_keyed_lock

    A magnetic keyed padlock A magnetic keyed padlock. 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.

  7. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    Reed Switch. The hermetically sealed reed switch is a common type of two-piece sensor. This switch operates with an electrically conductive switch that is either normally open or normally closed when under the influence of a magnetic field in respect to proximity to the second piece, which contains a magnet.

  8. I tried those Pair Eyewear glasses with the magnetic frames ...

    www.aol.com/lifestyle/tried-those-pair-eyewear...

    With prices starting at $60 per frame, prescription lenses included, Pair is already pretty affordable. However, for a limited time, Yahoo Life readers can save 15 percent on any Pair Eyewear ...

  9. Doorstop - Wikipedia

    en.wikipedia.org/wiki/Doorstop

    A newer version of equipping the door with the stopping mechanism is to attach a magnet to the bottom or top of the door on the side which opens outward, which then latches onto another magnet or magnetic material on the wall or a small hub on the floor. The magnet must be strong enough to hold the weight of the door, but weak enough to be ...

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