Single phase, 2-wire, Class 1 meter as per IS13779/IEC62056; long term stability with high accuracy; CT/shunt measuring element; internal real time clock; tamper resistant design with tamper log book including TOD and load profile; anti-tamper features and indications for current reversal, load earthed, neutral missing, external magnetic field, meter cover open; indication of tamper for high voltage ESD spark (35 kV ESD); single wire deficient metering registering energy even in absence of incoming/outgoing neutral; AMR facility through optional interface; RS 232/ RS485 communication port for remote monitoring (optional); data down-loading and display during power-failure; and data, storage of kWh and MD for previous six months.