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1. Various working modes available (public mode, private mode etc), suit for different application.
2. Low voltage alarm: if voltage is lower than 4.7V, lock will prompt with red light every opening, during this period, it can still be unlocked more than 100 times.
3. 4~10 digit passwords with random setting for unlocking.
4. Emergency opening function: When battery have no power, can use phone chargers to connect to USB connector or use external power supply(Battery case) to connect to socket to supply power to open lock.
5. Customizing function: PDA data collection, supporting download and print the unlocking record date.
6. Support single/double code unlocking.
7. Power supplied by 4*1.5V AA(5#) batteries.
8. Passed “National Secrecy Science and Technology Evaluation Center” testing.
9.With messy code protection and OTP unlocking way to keep high security.