| 摘要 |
<p>The lock is operated by a rotary button and can be blocked by disengaging a clutch in the operating mechanism. Disengagement is effected by a blocking lever, this being operated by remote control or directly from the lock bolt. The lever can be held in the blocking position by a two position locking lever, this being operated to neutralise the remote control mechanism. The rotary button drives a cylindrical body with an operating finger at the end to open a door via a series of levers. The bolt houses a key-operated barrel which can block and unblock the lock mechanism.</p> |
