... operation 2.Design according to international standards. UI2012 voltage current power meter display Specification:• Measure Vrms, lrms, W, PF/ ... efficiency;• Voltage range: AC:5-600V, DC:1-600V. Current range: AC&DC: 0.005-20A. Auto range;• ... Meter (Basic Model).UI2010: Digital Power Meter (Harmonic Analyzer Model).UI2012: Digital Power Meter (DC & AC power meter). UI2012 voltage current power meter ...