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A deadbolt or deadlock is a type of lock morticed into a wooden door where a bolt is thrown into the door frame, using a key from either side, to secure the door. [ 1 ] It is distinct from a spring bolt lock because a deadbolt can only be opened by a key or handle.
Key from either side retracts and projects deadbolt. Key from either side retracts latch bolt. Handle outside is locked by toggle or by projecting deadbolt and is unlocked by toggle only. When deadbolt is projected, handle inside retracts latch bolt only, and outside trim remains locked. — F33 [10] Classroom Security Intruder Deadbolt
Historically, such locks were intended for use at night-time, hence the name. [5] The keyless egress that they offer is a valuable fire safety measure, but may be a security risk if breaking a glass panel (usually in the door) or a nearby small window allows an intruder to reach the knob inside and open the door from the outside.
The term "warded lock" refers to the lock mechanism, while the term "mortise lock" refers to the bolt location. Warded locks contain a series of static obstructions, or wards, within the lock box; only a key with cutouts to match the obstructions will be able to turn freely in the lock and open the latch. [4]
Materials cost only, replacing the outlets and switches from 80s/90s almond to modern white; probably about $500 total, but we had a lot to replace. ... with a keypad deadbolt. Never have to worry ...
The keyhole of a mechanical cam lock is usually the same as an ordinary padlock. A physical key is used to unlock the lock. The physical key has a notch or slot corresponding to the obstacle in the cam lock, allowing it to rotate freely in the lock. Different from mechanical cam locks, electronic cam locks use an electronic key to unlock.
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