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A. True RMS Digital Multimeter
UNI-T’s UT139B is a True RMS Auto Range Digital Multimeter with 4000 display count and 1kHz bandwidth, featuring VFC, NCV, Max/Min/Rel measurements.
The meter can measure a.c./d.c. Voltage and Current, variable frequency voltage (V.F.C.), resistance, diode, circuit on-off, capacitance, frequency ratio.
Main features: 1. MAX/MIN/REL modes 2. Data hold, LED backlight, auto power off 3. VFC: low pass filter 4. Full range protection (600V) 5. True RMS 6. NCV 7. Auto/manual ranges selectable
Compact 3½ digit LCD digital manual range multimeter, ideal for educational use 20 ranges including transistor test, 10A current test, audible continuity test, diode test, and square wave 50Hz frequency test.
Overload protection on all ranges except 10A d.c. current range. Low battery indication. Robust ABS housing, with protective yellow rubberised holster. A low cost multi-function instrument which offers excellent value for educational use.
Supplied complete with safety test leads, battery and instructions. Designed in accordance with IEC1010 600V Cat II.