... metering device Manufacturer in China.power electric.Measure kWh, kvarh, Ampere, Volt, Frequency, power factor, active power, reactive power, active energy, reactive energy ... ø, Directional 1.000 0.2%5 Frequency Hz 70.00Hz 0.01HZ6 Active Power Wa, Wb, Wc, W Directional ... high and low voltage electric network2>Modern microprocessor and AC sampling technique.3>Owns high performance data collection and ...