| 摘要 |
Security system for use with a plurality of swinging doors having individual key-released locks, comprising a plurality of deadbolts with a single electrically operable power means for each door controllable by control switch means located at a remote control point, safety switch means controlled by each door to prevent operation of the associated power means unless that door is closed and operable, after actuation of the control switch means, to cause automatic locking actuation of the associated plurality of deadbolts when the door is closed, and signal means for indicating at the control point closed and open positions of each door and active or inactive positions of the deadbolts.
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