Emergency unlocking system for electronic door lock
An emergency unlocking system for electronic door lock is composed of stand-by circuit in lock body and emergency unlocking tool. The data exchange between the memory in stand-by circuit and the CPU in master control circuit is performed via a group of electronic relays. When failure occurs, said un...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | An emergency unlocking system for electronic door lock is composed of stand-by circuit in lock body and emergency unlocking tool. The data exchange between the memory in stand-by circuit and the CPU in master control circuit is performed via a group of electronic relays. When failure occurs, said unlocking tool is inserted into the emergency jack of lock to connect with stand-by circuit, provide power supply and input cipher to release the locking part, so opening the door. |
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