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AC or DC voltage monitor

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3 different voltage ranges

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4 selectable base modes (over, under,
between setpoints, outside setpoints)

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2 selectable measuring functions

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automatic or manual reset selectable

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alarm memory function

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DPCO alarm relay

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output relay contact invertable

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LED indicator for power supply, over
voltage and under voltage, failure,
status of the output relay, start-up and
reaction timer

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22.5mm DIN rail mount housing