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| The Drop Bolt AL100/AL300 is a locking system which can be installed either on the floor or on the top of the door frame. When power is applied, a bolt protrudes from the lock and lodges itself into the strike plate which is mounted on the door frame. Optional brackets are available for installers to mount the system on different types of doors. The electric drop bolt is designed to retract when there is a power failure or when the "break-glass" switch is activated. It is an optional feature to link the locking mechanism to the Fire Alarm panel as it involves no linking and maintenance costs. |