WM-01/02 Power Analyzer Datalogger 1).4 LCD Displays with W, ... Plug-in and Test 3).RS-232 Computer Interface WM-01/02 Power Analyzer Datalogger4 LCD Displays with W, PF, V ... , AC & DC) Range Resolution Accuracy Frequency Overload Protection 20A 0.01 0.5% of rdg ±3 dgts 0-5KHz 20A, fused ... % Dimension 352mm(L)*300mm(W)*100mm(H) 13.9"(L)*11.8"(W)*3.9"(H) Weight 1.637 Kg (approx.) 3 ...