Uni-T UT139B True RMS Digital MultimeterUni T UT139B True RMS digital multimeter The Uni T UT139B is a True RMS digital multimeter designed for everyday electrical measurements, combining ease of use with greater reading accuracy. The device operates in CAT III 600V category, offers an NCV function for quickly checking the condition of electrical installations, and features an easy to read display supported by a 31 segment analog bar graph. It is an intermediate model in the series that
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