... power, Reactive power, Apparent power, Accuracy: 0.5 classElectric energyFour quadrant measurement, active poweraccuracy rate0.5 class, reactive power accuracy rate0 ... .5 classDisplayProgrammable, switching, circular two, three, or four rows LED display Operation rangeAC/DC 80~270VPower consumption≤5VADigital interfaceRS-485,MODBUS-RTUPulse ...