Glossary of Terms

The Kcolefas Team

Updated: August 5, 2023
Glossary of Terms



Anti-explosive device, another term to describe a relocker.

Anti-drill plate

A special hardened plate that protects the lock and bolt work from drill attacks. Usually made of manganese steel and stainless steel.

Anti-drive spindle

A special design that prevents the spindle from being driven into the lock to remove the lock or give access to the lock body.

Audit Trail

Audit trail is an electronic lock feature that can record and allow the user to see a history of events. The function is mainly used in commercial situations to fight against internal theft.


Biometric lock

An electronic lock that allows the user to uses biometric

data to access. Usually, a biometric lock is referred to as the fingerprint lock. But it also includes palm vein recognition, iris recognition, voice recognition, facial recognition, signature recognition and all other possible alternatives.

Bolt work

The mechanism connecting the lock system and safe bolts, that moves the bolts of the safe from open to locked and vice versa.


Changeable lock

Usually refers to key-operated locks that can accept new keys without the disassembly of the lock.


Day Safe

A day safe, or a day deposit safe, has a deposit chute for quick cash and file deposits in the daytime. The cash and content inside should be transferred for overnight storage.

Dead bolt lock 

The mechanical or electronic locks that equipped with a square bolt or dead bolt as the locking bolt.

Dial lock

3-wheel or 4-wheel dial-operated mechanical combination lock.

Direct drive lock

A dead bolt lock that requires the lock cylinder to be physically rotated by the user to move the bolt.

Double bitted key

The key of lever locks that are bitted on both sides. Double bitted key locks are widely used as the standard key lock in the safe industry. There are also foldable or detachable keys for longer lengths.

Dual lock

With two locks on one safe, or the electronic safe lock with dual mode enabled.

Dual Mode 

Dual mode requires two people/codes to open the lock. Either by having two locks or, with a dual mode enabled electronic lock.

Duress code

If the operator is forced to open the lock by a criminal, a duress code can be input to still open the lock but sends a silent alarm to remote monitors, so that the criminal is not aware that he triggers the alarm.


Emergency lock 

Or an emergency override lock,  is a backup mechanical lock(usually a key lock) that will open the safe if electronic lock fails.


Fingerprint lock

An electronic safe lock that can accept fingerprints as input codes.


Glass plate

Or a glass relocker, refers to a tempered glass that protects the locking mechanism, which is usually attached to a relocker. When the glass plate breaks, the relocker is activated.

Gun Safe

A safe designed to store guns and weapons.


Hard plate

Or hardened anti-drill plate, a special plate made of hardened steel that provides drill protection.

Holiday locking periods

By an electronic lock or a time lock, that the safe can’t be opened during the holiday period.

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