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The meaning of LOCK is a fastening (as for a door) operated by a key or a combination. How to use lock in a sentence.

In more complex mechanical lock/key systems, two different keys, one of which is known as the master key, serve to open the lock. Common metals include brass, plated brass, nickel silver, and steel. The …

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Jan 23, 2026 · We evaluate the most popular models, installing and testing them in our homes to help you decide which one to buy. With an outstanding 4.5-star rating and an Editors' Choice award, the …

Oct 17, 2024 · In this detailed guide, we'll examine the 14 different types of locks, looking into their unique characteristics, applications, and security each type offers. We cover everything from the …

The lock on something such as a door or a drawer is the device which is used to keep it shut and prevent other people from opening it. Locks are opened with a key.

Enter a code to operate electromagnetic locks, electric door strikes, and other access controls. Shackle objects together, such as a door and its frame, to prevent theft or unauthorized entry. Secure …