Emergency interfaces Keyhole: You can use a mechanical key for emergency door opening. Temporary external power interface You can adopt an external backup battery to open the lock in the event of unlocking failure due to insufficient power supply of the fingerprint lock. USB interface The USB interface is used for firmware upgrade and uploading/downloading of user information and locking records through a USB pen drive. 1.5 Precautions 1. We strongly recommend you to enroll at least one administrator after installing the fingerprint lock. You must at least enroll one administrator before enrolling ordinary users. 2. Do not remove batteries when matching, enrolling or deleting fingerprints because the sudden power-down may result in data loss of fingerprint locks. Prior to removing batteries, make sure the fingerprint lock is not in working state. 3. It is recommended to replace the fingerprint lock batteries at least once every six months to avoid damaging the circuit due to the battery leakage. Do not use batteries with poor quality. 10
Fingerprint Lock User Manual V 4. When installing a fingerprint lock, connect the plug to the socket properly. Improper connection may lead to fingerprint lock failure.