Tripp Lite NFI-U08-2A Owner's Manual page 10

Wiring Requirements
Wiring the Relay Contact (ALM)
The switch has one set of relay alarm output. This relay contact
uses two contacts of the terminal block on the switch top panel.
The two contacts of the 6-pin terminal block connector are used
to detect user-configured events. The two wires attached to the
fault contacts form an open circuit when a user-configured event
is triggered. If a user-configured event does not occur, the fault
circuit remains closed.
Load
Relay rating: 24V, 1A
10
External
Power