| 摘要 |
An electrified emergency exit device having a normally locked condition and having an operable hold off lock that is accessible from the emergency use side for maintaining an unlocked condition. The emergency exit device includes a star wheel door latch for locking or unlocking a door, a sliding catch having a lock position where the sliding catch is engaged to the door latch for locking the door and a free position where the sliding catch is disengaged from the door latch for unlocking the door, a push bar linkage operable from the emergency use side and coupled for sliding the sliding catch to the free position, a remotely operable solenoid coupled for sliding the sliding catch to the free position, the hold off lock coupled for maintaining the sliding catch in the free position, and a solenoid spring for biasing the solenoid for urging the sliding catch to the lock position when none of the push bar, solenoid, and hold off lock are actuated.
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