The DJTZ23-FC671A type concentrator is one of the key equipment in the low-voltage power line carrier centralized meter reading system. The product uses an advanced 32-bit ARM9 hardware platform and a linux operating system platform as the core, with mature GPRS/CDMA/3G/4G communication Technology and micro-power wireless communication technology (meeting Q/GDW1376.4-2013 "Communication Protocol of Power User Information Collection System Part 4: Data Transmission Protocol Based on Micro-power Wireless Communication") is the data link and adopts a modular structure The design is an embedded concentrator product with advanced technology, stable performance and reliable operation. It is mainly used in automatic data collection of low-voltage power systems and automatic meter reading in power marketing systems.