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2. Electromagnetic lock - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_lock

   The principle behind an electromagnetic lock is the use of electromagnetism to lock a door when energized. The holding force should be collinear with the load, and the lock and armature plate should be face-to-face to achieve optimal operation. The magnetic lock relies upon some of the basic concepts of electromagnetism.

3. Neodymium magnet - Wikipedia

   en.wikipedia.org/wiki/Neodymium_magnet

   Neodymium is used as a magnetic crane which is a lifting device that lifts objects by magnetic force. [42] These cranes lift ferrous materials like steel plates, pipes, and scrap metal using the persistent magnetic field of the permanent magnets without requiring a continuous power supply. [43]

4. Magnet - Wikipedia

   en.wikipedia.org/wiki/Magnet

   Metal magnetic boards, strips, doors, microwave ovens, dishwashers, cars, metal I beams, and any metal surface can be used magnetic vinyl art. Science projects : Many topic questions are based on magnets, including the repulsion of current-carrying wires, the effect of temperature, and motors involving magnets.

5. 55 Cool Tech Gadgets Our Gear Editors Loved Testing This Year

   www.aol.com/lifestyle/40-wildly-innovative-tech...

   Motorized blinds are much more affordable than they once were. This under-$200 pair of two comes in a black out model and can be controlled from your phone and Alexa. ... Magnetic Cord Holder ...

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. Door security - Wikipedia

   en.wikipedia.org/wiki/Door_security

   A metal doorframe with a strike plate built in: in other doors this would be a metal strikeplate in a wooden doorframe. The term door security or door security gate may refer to any of a range of measures used to strengthen doors against door breaching, ram-raiding and lock picking, and prevent crimes such as burglary and home invasions.