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.

UT139B digital multimeter is newly designed to offer users better performance and higher safety rating. Total over-load protection and unique structural design make it a new type of multimeter with high performance/ price ratio and a best choice for electricians used in electrical maintenance and repairing.  Suitable for high level use in education.

The meter can measure AC/DC Voltage and Current, variable frequency voltage (V.F.C.), resistance, diode, circuit on-off, capacitance, frequency ratio.

Main features:

• MAX/MIN/REL modes
• Data hold, LED backlight, auto power off
• VFC: low pass filter
• Full range protection (600V)
• True RMS
• NCV
• Auto/manual ranges selectable