The MFJ-850B Line Voltage Meter helps you see low voltage "Brown out" conditions and surges that can damage your expensive electrical equipment by letting you see line voltage dips.
The MFJ-850B shows line voltage with a color coded scale that reads voltage from 95 - 135 volts with 2% accuracy. It measures a compact 2.25x2.25x1.5 inches and simply plugs into an AC outlet. The MFJ-850B has replaced the MFJ-850.
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