應用計算機管理，先購電后用電；在額定電流范圍內(nèi)能限制最大使用功率(由供電部門限定)；一表一卡，?？▽Ｓ?，失卡不失電，補卡再用；電卡能雙向傳遞數(shù)據(jù)；能自動斷電告**戶購電；電量為零時，自動拉閘斷電；并具有一定的防竊電軟件設(shè)計等。適用于頻率為50Hz或60Hz有功電能計量，安裝于室內(nèi)或室外表箱內(nèi)使用。適用于環(huán)境溫度為一10℃～+50℃，相對溫度不超過85％，且周圍空氣中不應有腐蝕性氣體，避免塵砂、鹽霧、凝露等影響。

Adopt the mode of computer control，first purchasing electricity，then using it；it can limit max service power(Specified by electric power department)in the rated current range；one meter with one card，special ca rd for special application，no lose electricity if Iosingcard，reuse electricity the rough renewing the card；the electric card can transmit the data；when the electricity quantity is zero，it can switch off the power automatically to warn users shall pu rchase the electricity；besides，it has certain software design of anti—thieving electricity．Applicable for measuring 50 Hz or 60Hz active energy,it is installed inside or in the box outside．It is used in the best place that the environment temperature is 10℃’+50℃and relative humidity is not beyond 85％．the ambient air can’t contain the corrosive gas，dust，salt fog，condensation，etc．．