Uni-T UT501B Insulation Resistance TesterUni T UT501B Insulation Resistance Tester The Uni T UT501B Insulation Resistance Tester is a versatile and precise measuring device from the UT500 series, designed to measure insulation resistance, AC voltage, and low resistance in electrical installations and equipment. The model offers test voltages of 250V 500V 1000V, measurement accuracy of (3%+5), as well as advanced PI and DAR diagnostic functions. Equipped with a clear 2000 count LCD display,
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