DDSY series single-phase electronic prepaid watt-hour meters, using advanced ultra-low power solid-state integrated circuit technology and ADVANCED SMT technology, used for measuring ac single-phase active power, widely used for measuring residential houses, offices, shops and other electricity consumption. The application of computer electricity sales software management, the first purchase of electricity after electricity, one card one meter, lost card replacement card without loss of power, low power alarm users buy power, zero power automatically pull power. Product size: 100mm*82mm*64mm Net weight: 343G