The AEMC True RMS Clamp-On Meter 205 is safety rated at 600V CAT IV. It measures AC + DC volts and amps, frequency, continuity, resistance and can also perform diode checks. It also measures Power and Power Factor, phase rotation, and THD. A Delta relative function allows new measurements to be compared to a reference value and a MIN/MAX function keeps track of these high and low values. The Model 205 also keeps track of peak + and peak – values. The 205 [2139.40] is rugged enough for the most demanding work environments and its IP54 rating allows it to withstand both dust and water spray. Function selection can easily be performed with one hand, even with a glove on.