kerong smart electronic digital code lock for file cabinets and metal lockers

1. various working modes available (public mode, private mode etc), suit for different application. 2. low voltage alarm: if voltage is lower than 4.8v, lock will prompt with blue light and continuous beeps 8 sounds after opening, during this time period, it can still be unlocked more than 100 times. 3. 4~10 digit passwords with random setting for unlocking. 4. random order password function and otp unlocking way keep high safety. 5. customizing function: pda data collection, supporting download and print the unlocking record date. 6. support single/double code unlocking.