| 摘要 |
<p>The system has a self-locking door lock (10) operable between a normal operation and an emergency operation. An unlocking device (20) attached to a door (1) includes an actuator (28) for unlocking the lock, where opening of the door is prevented upon actuation of the actuator during normal operation of the lock, and opening of the door is allowed upon actuation of the actuator during emergency operation of the lock. An accessible emergency button is integrated with the unlocking device so that the lock is switched from normal operation to emergency operation upon actuation of the button.</p> |
