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  2. Magnetic switchable device - Wikipedia

    en.wikipedia.org/wiki/Magnetic_switchable_device

    A magnetic switchable device (often called a magnetic base) is a magnetic fixture that uses one or more permanent magnets in a configuration that allows the external field to be turned on or off. They are used in many applications including optics , metalworking , lifting , and robotics, to attach items to metal surfaces in a secure but ...

  3. Electromagnetic lock - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_lock

    Quick to operate: Magnetic locks unlock instantly when the power is cut, allowing for quick release in comparison to other locks; Sturdy: Magnetic locks may also suffer less damage from multiple blows than do conventional locks. If a magnetic lock is forced open with a crowbar, it will often do little or no damage to the door or lock.

  4. List of keyboard switches - Wikipedia

    en.wikipedia.org/wiki/List_of_keyboard_switches

    Click Bar 50 g 50 g 60 g 1.8 mm 4.0 mm Plate mounting No Yes 80 million Kailh Kailh BOX Glazed Green MX Type stem Clicky Click Bar 50 g 50 g 50 g 1.8 mm 3.6 mm Plate Mounting No Yes 80 million Kailh Kailh BOX Jade MX Type stem Clicky Click Bar 50 g 50 g 60 g 1.8 mm 3.6 mm Plate Mounting No Yes 80 million Kailh Kailh BOX Pale Blue

  5. Reed switch - Wikipedia

    en.wikipedia.org/wiki/Reed_switch

    The reed switch [i] is an electromechanical switch operated by an applied magnetic field. It was invented in 1922 by professor Valentin Kovalenkov at the Petrograd Electrotechnical University , [ 1 ] and later evolved at Bell Telephone Laboratories in 1936 by Walter B. Ellwood into the reed relay.

  6. Access control - Wikipedia

    en.wikipedia.org/wiki/Access_control

    A magnetic door switch for monitoring door position; Request-to-exit (RTE) devices for allowing egress. When a RTE button is pushed, or the motion detector detects motion at the door, the door alarm is temporarily ignored while the door is opened. Exiting a door without having to electrically unlock the door is called mechanical free egress.

  7. Convicted felons, such as Trump, can get permits to enter ...

    www.aol.com/convicted-felons-trump-permits-enter...

    The claim: Donald Trump can't travel to Canada because he is a convicted felon. A Dec. 3 Threads post (direct link, archive link) offers a theory as to why Canadian Prime Minister Justin Trudeau ...

  8. Omron - Wikipedia

    en.wikipedia.org/wiki/OMRON

    Omron was established by Kazuma Tateisi (立石一真) in 1933 (as the Tateisi Electric Manufacturing Company) and incorporated in 1948. The company originated in an area of Kyoto called "Omuro (御室) ", from which the name "Omron" was derived. Prior to 1990, the corporation was known as Omron Tateisi Electronics. During the 1980s and early ...

  9. The 20 best sales this weekend: Stocking stuffers, last ... - AOL

    www.aol.com/lifestyle/the-20-best-sales-this...

    There's still time to pick up last-minute Christmas Day essentials you'll need, but consider this one of the very last days to do so. It's time to get a move on buying stocking stuffers and last ...

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