1．Function
  Load control
      To adjust  line load through switch on and off some of power switches according to load power or watt hours; 
  Large user meter reading
      Up to 8 meters can be automatically read(support many protocols like National DL/T645-1997, DL/T645-2007 );
  Pre-pay tariff management
      Power supply company can realize a prepay tariff management by using this devices;
  Illegal user control
      It can detect and control illegal users through monitoring meter wiring or other meter facilities;
  Power supply quality monitoring
      This device can monitoring1quality of supplied power such as harmonics, reliability, ampere or voltage loss and other parameters on request.

2．Application
  Large user management, such as load control , pre-pay tariff, illegal user detective and automatic meter reading.

3．Features
  High speed single chip computer design and embeded programming technology keeps the device has a high quality of steady and speed;
  Large scale LCD display,keyboard local data setting easy to use;
  Modual design makes the device can be easiely being upgraded and configured ;
  Flexible upward data channel,Meadia to master computer station can be easiely selected from ADSL,Data Modem,RS485,TCP/IP,GPRS/CDMA and Radio modem;
  Flexible downwarddata channel,  data concentrator can communcate with data abstracter terminal through mideas like PLC,mini radio modem RS485,mini busand so on.
  On field voice alarm system to notice on site personel in case of alarm occoured;
  Power falure time can beautomaticaly recorded and data recorded could be remained in the device for as long as 10 years in case of power shutdown.

4．Standards of design
The device is designed according to the national standards bellow:
DL/T533-93             《无线电负荷控制双向终端技术条件》
DL/T535-96             《电力负荷控制与管理系统数据传输规约》
DL/T743-2001        《电能量远方终端》
DL/T645-1997        《多功能电能表通信规约》
DL/T721-2000        《配电网自动化系统远方终端》
GB/T 13729-2002    远动终端通用技术条件
GB/T 4208-1993      外壳防护等级（IP代码）
GB/T 16611-1996    数传电台通用规范

5．Specification