... led PA7194I-5X1 X-Series digital power measurement table: Suitable for power grids, automation and control ... parameters of current, voltage, frequency, power, power factor and with high accuracy, good stability, anti-vibration can be directly instead ... / 5S, 2 times the voltage / 1SFrequency: 50HZ ± 10%Expansion: with the extended range of shunt or transformerAuxiliary power supply: AC220V ± 10%, or ...