... CDMA,GPRS communication AMR system/AMI System/MBUS,RS485,PLC,Wireless AMR System with CDMA or GPRS Communication is applied to ... : water meter, power meter, gas meter, hot-energy meter, and air conditioning flux meter, etc.), monitor and test all kinds of ... button and smoke detector etc, and realize security prevention by wireless deployment;5. Information storage and inquiry: can collect other kind ...