... frequency of 50Hz, it is highly accurate, reliable, durable, low power consumption, without reversion, creep-proof, anti-tampering, bilateral recording ... with strong overloading capability. It conforms to the related requirements of GB/T17215-1998. current2.5(10 ... ),15(60),20(80)Avoltage 220V,230Vfrequency 50/60Hzclass 1.0 or 2.0 Single phase electricity power meter