... ·Accuracy: Class 0.2·Voltage output Range: 220V (0.01% ~120% adjustable) Resolution of amplitude: 10%, 1%, 0 ... 3A, 5A, 10A, 20A, 60A( 0.01% ~120% adjustable) Resolution of amplitude: 10%, 1%, 0.01%·Max. Power output: Voltage: 20VA Current ... meters can be tested simultaneously ·Energy meter starting and creeping test· Voltage, current, phase, frequency etc output digital program-controlled ...