通过LED显示器显示电压、电流、电度的实时值，当过压30%、过流30%、欠压30%时进行声光报警，并能通过串行口结合有关通信协议，实时与管理计算机进行通信实现远程户外抄表。

The functions are LED displaying, alarming when 30% over-current, over-voltage and under-voltage occurring, and communicating with the management computer through the series port with some protocols.

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