JW SmartMeters Landis Gyr Electricity Meter is MID approved direct-connected residential meter records active and reactive energy consumption in all three-phase, four-wire networks (ZMF100) and three-phase, three-wire networks (ZFF100). The basic version provides energy registers for tariffication, red test diodes for active and reactive energy, an optical interface for meter reading and an interface for various communication forms. This interface is protected against fraud and is independent of the module suppliers. The exchangeable AMR Module is situated outside of the calibration liability. The function of the disconnector is customer specific and is defined by the communication module. Possible uses: anti-tampering, load limitation, remote disconnect, prepayment. The basic version can be extended with various AMR Modules for additional functions and communications: multi-rate import/export with external rate control, S0 pulse output, communication via PLC, GSM/GPRS or Ethernet.