There are duress  alarm parameters setting in  the device. When an employee comes across a duress situation, he can use the set duress alarm mode to verify. The device will open the door as usual, but the alarm signal will be sent to the alarm.

1:  1  Trigger: if  select  “Yes”,  when  user  use  1: 1 match mode, alarm signal will come out. Or there is no alarm signal.
1: N Trigger: if select “Yes”, when user use 1: N match mode, alarm signal will come out. Or there is no alarm signal.
Password Trigger: If select “Yes”, when a user use password verification mode, alarm signal will come out. Or there is no alarm signal.
Alarm Delay: After duress alarm gets started, the alarm signal will not output directly. It can be defined. After the set time period, the alarm signal will be generated automatically (0­255 seconds).