Tripp Lite NFI-U08-2A Owner's Manual page 9

Wiring Requirements
To insert power wire and connect the specified voltage and
maximum electric current to the power terminal block, follow these
steps:
• Use a flat-head screwdriver to loosen the wire-clamp screws.
• Insert the negative/positive DC wires into the PWR-/PWR+
terminals, respectively.
• Tighten the wire-clamp screws to prevent the wires from
loosening.
ATTENTION: Use a power supply from 12~48VDC, 0.5A maximum.
The device power shall be supplied by LPS circuit.
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