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USing US304 as the material, equipped with the passive electronic lock cylinder. Built-in encryption chip in lock cylinder , no power supply design. When the key contacts unlocking, electronic key reverse power supply lock, complete the authorization identification, decoding unlocking. After the unlocking is completed, the record is stored in the lock and electronic key storage for permanent retention.Through the sensor of opening and closing of the lock cylinder, the record can be used to detect the opening and locking.
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