This UNI-T's UT139B Digital Multimeter is ideal for science classrooms and college labs, helping students and teachers accurately measure electrical values in practical experiments. Designed for ease of use and safety, it supports a wide range of measurements for physics and electronics learning.

• Measures AC/DC voltage and current, resistance, capacitance, frequency, diode, and circuit continuity

• True RMS for precise readings, even with complex waveforms

• Auto and manual range selection with 4000 display count

• Includes MAX/MIN/REL modes, data hold, LED backlight, and auto power off

• Full range overload protection up to 600V

• Bandwidth: 1kHz; features NCV (non-contact voltage detection) and VFC (low pass filter)