GF112D electricity meter tester is a single-phase handheld clamp electronic meter test unit in accuracy class 0.05, 0.1 or 0.2, used for testing single phase electricity meters error on site. Wide measurement range from 1mA to 120A and 0 to 600V, and also can be used to test alternating current parameters-voltage, current, active power, reactive power, apparent power, harmonics, phase angle, power factor, frequency, energy etc.GF112D have excellent industrial structure design, weight light, operation simply, suite for electricity power utilities metrological department to check single phase energy meter error, it is with bluetooth printer, can print test error data on site for customers. This model GF112D tester is one ideal test tool for electrical engineer, welcome to try on it.