Intelligent control instruments are designed to meet the power monitoring needs of power systems, industrial and mining enterprises, public facilities, and intelligent buildings. Electric power instruments can directly replace conventional power transmitters and measuring instruments. As an advanced, intelligent, and digital front-end acquisition component, this electric power instrument has been widely used in various control systems, SCADA systems, and energy management systems. The instrument adopts AC sampling technology, capable of measuring parameters such as current, voltage frequency, active power, reactive power, active energy, and reactive energy in the power grid. It allows for setting multipliers through the panel membrane switch and features RS485 communication, alarm output, and switch input/output functions.