... IEC-51 and National GB7676-98FrequencyMeter (LONG SCALE METER)Model: CP-96,CP-72Class:1.0Voltage:50V,100V,220V,380V,415V,440VFrequency:45 ... . PowerFactor Meter(LONG SCALE METER)Used in 1P&3P circuitsModel: CP-96,CP-72Class:1.5 Voltage: 100V,220V,380V,415V,440VFrequency:40HZ ... with build-in coverterfor 1 phase, 3P3W,3P4W circuits.Model: CP-96, CP-72Class:1.5Voltage:50V,100V,220V,240V,220/380V,240 ...