PM500 series instruments are divided into single-function instruments and multi-function instruments. They can measure electric parameters such as current, neutral point current, voltage, frequency, power, power factor and electric energy, the functions of 485 communication, power pulse output, switch input, switch output, analog output and so on can be expanded according to the needs of the field. 

   This series of instruments can directly replace the auxiliary units such as power transmitter, measuring and indicating instruments, etc. . Through the selection of functions and expansion modules, they can realize the functions of digital communication, transmission and four remotes, etc. , power equipment such as closed cabinet, small three-box, DC panel and communication panel can be integrated to provide energy consumption and monitoring data for various control systems, Scada Systems and energy consumption management systems.