Vanderbilt V44 Duo Manuel D'installation Et Utilisation page 22

22 V44 Duo Installation & User manual
Enter duress code
This is how to activate the alarm output when forced to open
the door under threat:
Enter the usual entrance code, only add 1 to the last digit
in the code.
Example 1: If the entrance code is 1234, enter 1235 in-
stead.
Example 2: If the code is 1239, enter 1230 instead.
When a duress code is entered, the door will open at the
same time as the duress output is activated. It will remain
activated until reset by somebody entering programming
mode.