This acquisition terminal is a device used in the low-voltage power carrier centralized meter reading system to transmit and collect energy information of multiple electricity meters and exchange data with the concentrator. It is responsible for data classification, collection, storage, transmission, meter reading failure, terminal stop/power on and other events recording, as well as self-check and self-recovery. Support handheld devices through infrared communication interface to maintain interface parameters and field reading power data. The data of the metering instrument with RS485 interface supporting DL/645-2007 protocol is collected through the RS485 communication interface of the acquisition terminal. This product is ningxia longji NingGuang instrument co., LTD., part of electric power information collection system, it has a RS485 measuring instrument management and the function of data acquisition, through the use of low voltage powerline carrier medium, and realize the data communication with concentrator, the full search node and tech-oriented cover copy rate, greatly reduced for the user after installation commissioning and maintenance work.