M-BUS collector is a multi-channel MBUS secondary concentrator, which is a key device in a centralized meter reading system. The uplink communicates with the server in real time, and can be connected to Zhuozheng's "Intelligent Meter Reading Control Management System". The downlink can connect to six channels. It can exchange data with the master station through the uplink channel and issue or transfer various commands from the master station. The uplink interface supports GPRS fixed IP, GPRS non-fixed IP, 232 serial port, and Ethernet.