Blue Sea Ac Digital Frequency Meter 8239

BLUE SEA SYSTEMS AC Digital Frequency Meter 8239

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  AC Digital Frequency Meter 40-90 Hz
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  Displays frequency from 40 to 90 Hertz
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  Features large LED numerals
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  3 brightness display levels
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  Splash-proof front
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  9/16 in. display character size
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  Power consumption of .010 to 0.27 watt