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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.

  3. 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.

  4. 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.

  5. Trump moves inauguration inside, 'vast majority' of ticketed ...

    www.aol.com/trumps-inauguration-moving-indoors...

    PHOTO: A member of the U.S. Secret Service closes a security gate near the presidential Inauguration parade review stand on Pennsylvania Avenue on the north side of the White House, Jan. 16, 2025 ...

  6. Secutron - Wikipedia

    en.wikipedia.org/wiki/Secutron

    Secutron Fire Alarm Control Panel. Secutron Inc. is a manufacturer of engineered fire alarm systems supported by a global network of authorized Engineered Systems Distributors.

  7. Chubb Locks - Wikipedia

    en.wikipedia.org/wiki/Chubb_Locks

    The former Chubb factory in Wolverhampton, England, which is still known as the Chubb Building. Chubb Locks is a former brand name of the Mul-T-Lock subsidiary of the Assa Abloy Group, which manufactures locking systems for residential, secure confinement and commercial applications.