measure the single phase Wattmeter,single phase varmeter,3P3W wattmeter,3P3W varmeter,3P4W wattmeter or 3P4W varmeter. DigitaI Power AmmeterModeITFl6-W TFl6-VarSize80×160Function ... :measure the single phase Wattmeter,single phase varmeter,3P3W wattmeter,3P3Wvarmeter,3P4W ...