The Extech EX350-NIST is a professional DMM loaded with advanced features and functions. Low Impedance (LoZ) mode eliminates false readings caused by ghost voltages. A Low Pass Filter (LPF) attenuates high frequencies to reduce noise for more accurate readings. True RMS provides accurate readings when measuring distorted or noisy waveforms. A Built-in Non-Contact AC Voltage Detector quickly checks for the presence of AC Voltage before testing. It features a 4000 count LCD display, data hold, min-max, relative mode, capacitance zero, auto power off, continuity, and diode test. This meter will measure AC/DC voltage to 600 V and AC/DC current to 10 amps. It includes NIST Certification.