Dual Retraction Lever Deadlock with Auxiliary Dead Latch for Public Buildings-DDAL30

The latch bolt on an asylum or institutional lock is operated exclusively by a key from either side of the door. Unlike standard locks that allow lever operation, both levers on this lock are permanently rendered inoperative, meaning occupants cannot open or close the door using the handles. Access is strictly controlled through key operation only, ensuring that staff can lock or unlock the latch bolt from outside or inside as needed, while preventing any unauthorized use of the levers by individuals within the facility.

In addition to the key-operated latch bolt, this lock is equipped with an auxiliary dead latch, which provides a secondary locking point for enhanced security. The auxiliary dead latch ensures that even if the primary latch bolt is compromised, the door remains secured by the additional locking mechanism. This dual-locking design is specifically intended for high-security institutional environments where preventing unauthorized egress and controlling access are critical, while still allowing authorized staff to manage the lock from either side using a key.

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