Installation Instructions

4. Type of passcode
After inputting the passcode on the keyboard of the lock, press
the unlock button to unlock. Passcodes are classified into permanent,
time-limited, one-time, empty, loop, custom, etc.
4.1 Permanent passcode
The permanent passcode must be used within 24 hours after it
is generated, otherwise it will automatically expire.
（ Ⅲ ） Main functions-types of passcode
TT lock function