主要用途： Main application 

用于新建或改造的城鎮(zhèn)居民小區(qū)及農(nóng)村等單相用電用戶電能計量，具有預(yù)付費功能，特別適合居民住宅小區(qū)、機(jī)關(guān)、廠礦、學(xué)校等安裝現(xiàn)場，可有效解決收費難問題，是推進(jìn)需求側(cè)管理工作有效手段。

II was used in single phase user measure power, mostly in new building and house building and rural. it has prepaid fee function ,specially resident house zone ,enterprise factory and school, it can resolve the problem which the cha「ging fee is very different, it is one effect way which improve demanding and manage work