Installation Instructions

4.2 Time-limited passcode
（ Ⅲ ） Main functions-passcode management
TT lock function
The time-limited passcode can own an expiration date, which is a
minimum of one hour and a maximum of three years. If the validity period is
within one year, the time can be accurate to the hour; if the validity period is
more than one year, the accuracy is month. When the time-limited passcode is
valid, it should be used within 24 hours, otherwise it will automatically expire.
After inputting the passcode, please press the lock button or # on the
right corner to lock the door.
The way to change the passcode: input the original passcode to unlock,
then input “10 # original passcode # new passcode (between 4 numbers
and 6numbers) # input new passcode again # ”.