... -performance Li-battery, continuous work 8 hours without any external power, convenient for filed test.3.Multiparameter, can test voltage, ... current fundamental wave,264 times harmonic wave, phase position, frequency, power, power factor and so on.4.Can set up different storage ... 60mm(L*W*H)Weight2Kg All of our products' work power ranges from 110V to 400V adjustable!!Packing show(bubble board+ standard ...