GF112V2 made in GFUVE GROUP, is a high precision single phase handheld energy meter accuracy tester in class 0.1, used for testing all kinds of single phase electronic meters error on site. Wide measurement range from 1mA to 200A and 0 to 600V, frequency range 40.000Hz to 70.000Hz, and also can be used to test alternating current electrical parameters - voltage, current, active power, reactive power, apparent power, harmonics, phase angle, power factor, frequency, energy etc. It can display U & I wave form and vector diagram. Small size, light weight, simple and convenient operation. It is an ideal testing equipment for the metrology departments of electricity power companies and electrical service engineers.