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What is the function of Load Indicator LED in PDU AP7921B ?

The load indicator LED identifies near-overload (warning) and overload (critical) conditions for the Rack PDU.
Solid Green--OK. No near-overload (warning) or overload (critical) alarms are present.
Solid Yellow--Warning. At least one near-overload (warning) alarm is present, but no overload (critical) alarms are present.
Flashing Red-- Overload. At least one overload (critical) alarm is present.

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Product:
AP7921B