AEMC 5217 [2154.09] True RMS Digital Multimeter with Frequency/Duty Cycle, 6000 Counts, 750V AC/1000V DC. The Model 5217 is a portable hand-held multimeter that measures a variety of electrical and physical quantities including voltage (AC and DC), resistance, capacitance, frequency and temperature. These instruments can also perform continuity checks, voltage detection and diode testing (including forward bias voltage). Measurement features include Auto Range mode, which enables the instrument to select the best range for the input detected, and a Data HOLD function. These instruments are rugged and simple to use and rated to 600V CAT III.