DJGZ23-SH610 type state grid concentrator is the latest standard products which meet the needs of state grid in 2013. It is the key equipments in the low voltage concentration of electricity line carrier meter reading system, and it can read and save the data of intelligent meter, stage gird concentrator or different carrier communication terminal, it can also collect the outside 485 table data, and the download communication method is the low voltage power line carrier and RS-485 serial communication channel; also it can exchange the data by upward communication method and main station or handheld device, while the upload communication adopts public network, supports client-side scripting and server two communication methods, as well as adopting modular design. It can be replaced by communication module directly to change the way of communication.