UT139B TRUE-RMS DIGITAL MULTIMETER UNI-T UT139BFeatures Key Features UT139 Series digital multimeters are newly designed to offer users better performance and higher safety rating. Totally over load protection and unique structural design make it new type of multimeter with high performance price ratio and a best choice for electricians used in electrical maintenance and repairing. 1. True RMS for the whole series; 2. Measure signals with varied frequency (VFC); 3. Measure large capacitance up to
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