| 摘要 |
At least one in the form of a shackle element (1,2) consists of two relatively movable parts (4,5) joined, via a hinge or link (6), by at least one lockable and releasable lock (12) which possesses a control unit (18) with time switch or and as a mechanical or electric clock. The control unit has a separate control part (24) for controlling the control unit preferably by remote control and especially by means of an infra-red transmission section (28) , and has a connecting element (20) for setting a time-limit with indicator (22).
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