UT139B True RMS Digital Multimeter
1. Product introduction:
UT139 series true rms digital multimeter is a handheld multimeter with high reliability, high security, automatic ranging, handheld multimeter and other characteristics. It has large screen digital and high-resolution functions, full-range overload protection and unique appearance design; And it has the VFD (Variable-frequency Drive) measurement function of inverter, which can stably measure the frequency conversion voltage or current with high-frequency interference signals; Combined with true RMS measurement, data hold, relative measurement, max/min, undervoltage indication, backlight and automatic shutdown, this is the next generation of practical electrical measuring instruments with even better performance. It can be used as an ideal tool for the detection, maintenance and repair of various colleges and universities, smelting, communications, manufacturing, petroleum, national defense, electric power, foundry, and circuit power equipment.

2. Product features:
True RMS
Auto-ranging and manual ranging can be selected
VFC frequency conversion function: it can reduce the interference of high-frequency signals on the measurement results
MAX/MIN/REL: Maximum/Minimum/Relative Measurement.
NCV non-contact electrical test function
Digital hold, white LED backlight
Automatic power off
Full-scale protection for all ranges 600V inputs
The instruments are designed to meet safety standards for overvoltage CAT III 600V category, double insulation, and pollution class 2
The meters comply with CE European Union standards