The product is characterized by integrated functions of metering, display, communication, detection, etc. It provides with functions of metering the import and export active energy, the reactive energy of four quadrants and demand by time period accurately; metering voltage, current, active and reactive power, power factors, etc. of three phases; detecting and recording over/low voltage, over current, etc.; performing the function of remote and local meter reading, programming, etc. It is widely used in grid gateway, power plants, substations, comprehensive energy measurement and management of enterprises and institutions and TOU metering for industry users.