User`s manual

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2.3 Wiring Digital Input
The switch provides 2 digital inputs. It allows users to connect the termination
units’ digital output and manage/monitor the status of the connected unit. The
Digital Input pin can be pulled high or low; thus the connected equipment can
actively drive these pins high or low. The embedded software UI allows you to
read and set the value to the connected device.
The power input voltage of logic low is DC 0~10V. Logic high is DC 11~30V.
Wire the digital input just like wiring the power input introduced in chapter 2.2.
2.4 Wiring Digital Output
The switch provides 2 digital outputs, also known as Relay Output. The relay
contacts are energized (open) for normal operation and will close for fault
conditions. The fault conditions include power failure, Ethernet port link break
or other pre-defined events which can be configured in the switch UI.
Wiring digital output is exactly the same as wiring power input introduced in
chapter 2.2.
2.5 Wiring Earth Ground
To ensure the system will not be damaged by noise or any electrical shock, we