This is a dual impedance true RMS digital multimeter integrating a variety of measurements like 1000 Amp AC/DC Current, 1000V AC/DC Voltage, Frequency, Duty Cycle, Resistance, Capacitance, Diode, Continuity, Temperature, NCV, VFD, Inrush Current, etc.. And there are more functions like last data hold, flashlight, Max./Min./Relative value, Celsius/Fahrenheit degree, and zero key. Knowing the value of inrush current can help you locate a startup problem quickly, whether it's in the motor or in the starting circuit. The measuring time of inrush current is about 100ms. Multi-purpose clamp meter is made of high quality ABS material, with large LCD screen, which can display the measurement results clearly. The multimeter is compact design, easy to carry and store, has the characteristics of high reliability, high safety, automatic range, handheld clamp meter, etc. The Clamp Meter has Variable Frequency Drive Filtering (VFD) and low Input Impedance (LoZ) modes.