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  2. 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.

  3. Safe - Wikipedia

    en.wikipedia.org/wiki/Safe

    TL-15 Burglary Rated Safe Basic steel safe with an electronic lock. A safe (also called a strongbox or coffer) is a secure lockable enclosure used for securing valuable objects against theft or fire. A safe is usually a hollow cuboid or cylinder, with one face being removable or hinged to form a door.

  4. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    Some alarm systems serve a single purpose of burglary protection; combination systems provide fire and intrusion protection. Intrusion-alarm systems are combined with closed-circuit television surveillance (CCTV) systems to record intruders' activities and interface to access control systems for electrically locked doors. There are many types ...

  5. Master Lock - Wikipedia

    en.wikipedia.org/wiki/Master_Lock

    Master Lock is an American company that sells padlocks, combination locks, safes, and related security products. Now a subsidiary of Fortune Brands Innovations , Master Lock Company LLC was formed in 1921 by locksmith -inventor Harry Soref and is headquartered in Oak Creek, Wisconsin .

  6. Chubb Fire & Security - Wikipedia

    en.wikipedia.org/wiki/Chubb_Fire_&_Security

    The company won a government competition for a lock which could not be opened other than by its own key. [ 2 ] In 1835, the company produced its first Chubb safe at its factory in Wolverhampton , UK and, in the second half of the 19th century, the company expanded into the United States, and produced a time lock that was fitted to bank vaults ...

  7. Bank vault - Wikipedia

    en.wikipedia.org/wiki/Bank_vault

    The finished vault panels, door, and lock assembly are transported to the bank construction site. The vault manufacturer's workers then place the panels enclosed in steel at the designated spots and weld them together. The vault manufacturer may also supply an alarm system, which is installed at the same time.