... amr watt-hour meter,RS-485 remote interface for AMR,multi-rate function,. Remote watt-hour meter's characteristic:1.AMR system and ... period.5.Anti-fraud by accounting the reverse electrical current in arrear.6.Power will be cutted off when it reach ... retained over 10 years after power off.AMR system's functions: reading meter in realtime,saving data,inquiry,statistics and controlling meters ...