A key that opens several locks of a certain type, each lock also having its own specific key.
A master key system is usually used to prevent being locked out, if there is a chance that a specific lock key could be lost, misplaced or not returned.
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A key that opens several locks of a certain type, each lock also having its own specific key.
A master key system is usually used to prevent being locked out, if there is a chance that a specific lock key could be lost, misplaced or not returned.
