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No security risks, vibration, noise, and no transient high current and voltage drop, video intercom and access control works best choice; Degaussing computer software control, no residual magnetism and remanence, long-term use does not appear fault does not lock the door; Car door lock structure, no emergency power can be manually unlocked, at any time will automatically lock the door, safe and reliable; Modular upgrade, only screwdriver for circuit board can be upgraded to make money, do not lock into a swipe card lock; Mechanical body control delay (no electricity board), good performance, its cost is close to the ordinary use of electronically controlled lock
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