Automatic Meter Reading (AMR) is the technology of automatically collecting data from energy metering devices and transferring that data to a central database by communication technology for remote control and analyzing. AMR system is composed of management software, remote communication channel, power management terminal, regional summary meter, local communication channel, user energy meter and other equipment. Power companies can build AMR system to replace the manual meter reading to save human resources, reduce meter reading costs and improve meter reading efficiency and success rate.