Wifi electric smart power meters are single phase / three-phase electricity meter with smart management system, it is a Wi-Fi enable electric meter with high accuracy up to Class 0.5S, easy to install with din rail mounting. It can measure the voltage, current, power, power factor, frequency with high reliability, fully comply to the international standard IEC62053/IEC62055-41/IEC62056-21. DIN rail smart energy meter is designed with advanced microprocessor and digital signal processing technology. It integrates comprehensive Single / three phase power measurement, display, energy accumulation, and network communication. It has strong anti-interference ability and can still work stably in situations with severe electromagnetic interference.