The Yokogawa 2533/E41 is a single phase, AC or DC Digital Power Meter. The 2533/E41 provides simultaneous display of 3 measured values; voltage, current, & power, or total power, apparent power, reactive power, or power factor. It also provides true rms measurements of square, triangular, and distorted waveforms. Maximum input is 600 VAC at 20 A. IEEE-488 interface is standard.