AVer EH11116H-4 series user manual - Manual (Page 104)

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3.8 Relay Setting
The I/O device must be installed to use this function.
1. Click the drop-down list and select the relay.
2. Enter relay name in Name column.
3. The system automatically detects the card and input number. In the Content section, enter Description of
relay.
4. In the test section, click Test to trigger relay. Red is high and Green is low.
5. Click OK to exit and accept the setting and Cancel to exit without saving the setting.