Detailed Product Description Power MeterModel: FW-W96, FW-W72Class:1.5Voltage:50V,100V,220V,240V,220/380V,240/415VCurrent:5AThese meters are used with potential secondary voltage 100V voltage transformer or secondary current 5A CT. Wattmeters with built-in converter for 3P 3W, 3P 4W and single phase.