The DDZY188C single-phase intelligent energy meter is mainly developed for the demand of the State Grid market and the 2013 product planning outline. The product design is based on Q/GDW 1364-2013 "Technical Specification for Single phase Intelligent Meters". Designed and manufactured using advanced microelectronics technology and SMT process, it has the characteristics of strong functionality and good stability. Its communication complies with DL/T 645-2007 "Multi functional Energy Meter Communication Protocol" and meets the requirements of single-phase energy metering in China. It is an advanced, reliable, and accurate energy metering product.