Electronic lock

An electronic lock (or digital lock, electric lock) is a form of lock that uses electricity as an integral component in the locking and unlocking of the lock. Many electronic locks does not use keys and are instead combination based.

Electromechanical locks use both electronic and mechanical locking components.

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Principles of Operation


Electronic locks function in various different ways, but most use an electronic solenoid to prevent entry, and to allow entry when required.

Locks such as the Videx Cyberlock and the ASSA QLIQ employ a digital communication between the lock cylinder and the key, if authenticated the solenoid retracts, allowing the plug to turn in the lock.

Electronic Safes function in much the same way, a keypad or human interface device sends the entered code to the mainboard, which compares the entered combination with the combination stored on the EPPROM, if it is, the mainboard applies current to the solenoid, causing the bolt that lies in it to retract allowing the locking bolt to be retracted.