dem091 single phase electronic prepayment watt-hour meter is a kind of new-style meter which purchase electricity by ic card and adopt micro-electronics techniques. dem091 single phase electronic prepayment watt-hour meter is used for measuring rated frequency 50hz or 60hz single phase ac active energy electric power consumption and realize using electric power after prepaying and realize user load control function. dem091 single phase electronic prepayment watt-hour meter is a kind of idea product for reforming using electricity system and realizing electric energy commoditization and effectively control and adjust electricity net load. its technique performance are completely conformed to national standard gb/t17215-1998 and international standard iec61036. function and features: 1. data memorizer of not easy to lost, after power cut down, data preserved forever. 2. the direction of electric power can be distinguished automatically, can measure unidirectional energy power, and has function of anti-stealing electricity. 3. may select many kinds of ic card, have ic card with code and data against false . 4. may select 6 digits led display or 7 digits lcd display. 5. may select payment controls by kwh type or money type. 6. for management system software, or may select net version. watt hour meter, watt hour meters, kilowatt hour meter, kilowatt hour meters, kilowatt-hour meter, kilowatt-hour meters, kwhmeter, kwh meters, electricity meter, electricity meters, electric meter, electric meters, electronic meter, electronic meters, electrical meter, electrical meters, kwhmeters, kwh-meter, electric energy meter, billing meter, static watt hour meter, mechanical kwh meters, watthour power meter, ac kilowatt-hour meter, mechanical kwh meter, mechanical energy meter, single phase mechanical kwh meter, three phase mechanical kwh meter, electro-mechanical kwh meter, prepaid kwh meter, prepayment meter, electricity meters with prepaid chip cards, multi meter, single phase electronic prepayment watt-hour meter, china meter, top-quality electricity meters, din rail kwh meters, din rail watt-hour meter, din rail energy meter, din-rail electronic watt-hour meter, din rail mounted kwh meters, single phase din rail watt-hour meter, single phase din rail kwh meters, three phase din rail kwh meter, three phase electronic kwh electricity meters, single phase electronic kwh electricity meters, din mount single-phase class 1 kilowatt hour meter, din mount three-phase class 1 kilowatt hour meter, din rail mount 1 module single phase kilowatt hour meter