... water meter remotely CDMA,GPRS communication AMR system/AMI System/MBUS,RS485,PLC,Wireless AMR System with CDMA or GPRS Communication is applied to ... from faraway. It has a computer network system with sound self-check , unique alarm and automatic cut-off monitoring functions when gas ... a new type of concept of the system with strong operation, which has alarm and control functions for debt and greatly ...