AHD MOBILE DVR Hardware User Manual OPAX-60SD
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1 with one terminal of the Emergency button, and connect the other terminal of the
Emergency button with ground.
Figure 15.
Emergency button connection
PS: (If the connected Alarm input is Positive trigger, the other end of the Emergency
button will be 5-32V DC power)
Setup it in the DVR menu “Alarm” “Input”, select AlarmInput1 in the list to setup
the alarm parameter. See as following:
Figure 16.
Setup alarm input
ChnInput: This channel is used to connect with the Emergency button.
UploadType: When you use the emergency button, please set up it to be “Urgency”,
otherwise, set up it to be “No”
6.3 Serial ports connection
The device provides a group of serial ports which are used to connect with some
user’s peripherals, the interface is LVTTL (3.3V) level