... prepayment kWh meter, one meter with one IC card.upper counter display total energy used, down ... Single-Phase Electronic Prepaid Kilowatt Hour Meter (IC card type) is developed on basis of DDS ... meter has functions such as anti-counterfeit, encryption, card reading, current limiting and automatic cut-off recovery ... Meter and GB/T18460-2001,IC Card Prepaid Power Sale System.2.2 When voltage of power ...