HYJZQ-2 Low-voltage PLC Centralized Controller is the centralized meter reading system in key equipment. The uplink channel with the mainstream GPRS, CDMA, CSD, RS485 and so on, through the uplink channel and the main station (or handheld unit) for data exchange; the downlink channel is a low-voltage power line carrier, which can automatically store a variety of meter reading with a carrier communication function intelligent instruments, collection terminal or acquisition modules and a variety of carrier power data communication terminals.