| 摘要 |
<p>Locking and unlocking system comprising a lock, respectively a combination lock, with several possibilities of actuation, which operate the opening and closing mechanism or several of such locking mechanisms. One or more of these possibilities provide a normal function, whereas other possibilities provide one or more additional functions, for instance operating a particular operator switch (impedance relay), a contact member, such as an alarm contact (4), or sending a particular message which (in addition to the normal alarm) leads to a marking of the content to be protected, respectively of the author of the crime himself. Even with a mechanical locking and with large locking mechanisms, this system can be realized with a minimum of drillings and slots, respectively with a single narrow drilling or slot, performed in the front plates of the door.</p> |
