Dahua N43AM5Z, Quick Start Manual, Page: 10 / 21

Introduction 3
Mode A Figure 1-3
Mode B Figure 1-4
Log in web interface, and configure alarm input and alarm output in alarm setting. Step 3
 The alarm input in the web interface is corresponding to the alarm input end of the
I/O port. There will be high level and low level alarm signal generated by the alarm
input device when alarm occurs, set the input mode to "NO" (default) if the alarm
input signal is logic "0" and to "NC" if the alarm input signal is logic "1".

The alarm output in the web interface is corresponding to the alarm output end of
the device, which is also alarm output end of the I/O port.