SYS194 series of smart electricity meters, power monitoring requirements for power systems, industrial and mining enterprises, public facilities, intelligent building design. It can measure all the common electrical parameters, including current, voltage, frequency, power factor, active power, reactive power, active power, reactive power, etc., charging pulse output and RS485 communication interface, which enables remote transmission of data. And an optional switch input and output, analog output, harmonic content analysis, multi-rate electric energy statistics, event logging, and other functions; products are now widely used in energy management systems, substation automation, distribution automation, residential electricity monitoring, industrial automation, intelligent building, smart power strip and switch cabinet.