An electromagnetic lock, magnetic lock, or maglock is a locking device that consists of an electromagnet and an armature plate. There are two main types of electric locking devices.Locking devices can be either "fail safe" or "fail secure".
1. A fail-secure locking device remains locked when power is lost.
2. Fail-safe locking devices are unlocked when de-energized. Direct pull electromagnetic locks are inherently fail-safe.
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