The X series multifunctional harmonic meter adopts advanced microprocessors and digital signal processing technology, and can measure commonly used power parameters, reactive energy, harmonic content and other electrical parameters through direct communication. It can also be equipped with switch input and output, analog transmission output, power surge output, and RS485 network communication function. As an advanced intelligent and digital front-end acquisition component for the power grid, this instrument is widely used in various control systems, industrial automation, intelligent buildings, intelligent distribution panels, and switch boxes. It has the characteristics of easy installation, simple wiring, easy maintenance, easy engineering quantity, and programmable input parameters on site. Capable of networking different PLCs and industrial control computer communication software in the industry