| 摘要 |
Single key system, consisting of a lock, keys and an encoder. The lock includes an electronic circuit 25 where an access code and key identification codes are stored, with specified restrictions. In addition, the lock includes a mechanism 22 for enabling or inhibiting the rotation of the cylinder 13, managed by the electronic circuit 25. The keys include electronic circuits that store the access codes of one or more locks. The encoder enables the keys' codes to be entered, cancelled or modified, a single key being able to include authorization for opening several locks. <IMAGE>
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