electronic type amr watt-hour meter,RS-485 remote interface for AMR,multi-rate function,. Remote watt-hour meter's characteristic:1.AMR system and ... on inner RTC clock.3.Data and informations shown by LCD screen.4.Precision measurement, no needs correctting after a ... 10 years after power off.AMR system's functions: reading meter in realtime,saving data,inquiry,statistics and controlling meters etc. ...