| 摘要 |
The lock system compares a certain data stored in an encoder of a key with that of a decoder in a lock. If the two data are identical with each other, the lock is open, but if not, the lock stays locked to give alarm. A solenoid for holding the rotation shafts for the lock motor and the key holder releases the locking only when the encoder and the decoder agree on respective data, such that a mechanical force is hard to break the locking state to keep a better security.
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