Vanderbilt V44 Duo Manuel D'installation Et Utilisation page 18

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This is how to choose one of the functions:
1 Press B and enter the current password.
2 Enter A69.
3 Enter either:
0 = Door Alert (default).
1 = Duress
Door monitoring on/off
If door contacts are used and this function is activated, a
warning signal sounds during the time set as door held
warning time, i.e. when the opening time has expired and
the door is still open.
If the door held warning time expires and the door is still
open, the alert output is activated (if the Alert function is
activated). This also happens if the door is forced open.
This is how to activate Door monitoring:
1 Press B and enter the current password
2 Enter A67.
3 Enter 1.
To deactivate Door monitoring, press 0 in step 3 instead.
V44 Duo Installation & User manual