... Feature: The digital power meter (panel meter) can test three-phase voltage, three phasecurrent, active power, reactive power, frequency, power factor,active power absorption and reactivepower ... output, 4-20mA/0-20mA.EnvironmentWorking Environment-10~55Storage Environment-20~75SafetyWithstand voltageInput and output>2kV, Input and output>2kV, Power supply and ...