Dahua DH-XVR54 L-I2 Series User Manual page 161

Parameter
Video Matrix
Buzzer
Log
Disarming
Click Apply to complete the settings.
Click Default to restore the default setting.

Click Copy to, in the Copy to dialog box, select the additional channel(s) that you want

to copy the local alarm settings to, and then click Apply.
5.10.2.2 Configuring Alarms from Alarm Box
You can connect the alarm box to the RS-485 port of the Device. When the alarm is detected by the
alarm box, the alarm information will be uploaded to the Device, and then the Device outputs the
alarms in the way that you configure in this section.
Select Main Menu > ALARM > Alarm-in Port > Alarm Box.
Description
Select the checkbox to enable the function. When an alarm event occurs,
the video output port outputs the settings configured in Main Menu >
DISPLAY > Tour Setting.
This function is available on select models.
Select the checkbox to activate a buzzer noise at the Device.
Select the checkbox to enable the Device to record a local alarm log.
After enabling this function, you can connect a switch to the alarm input
port for disarming control.
Alarm box
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User's Manual