It is a controller to operate multi ways for distribution lines such as RMU consisting of several Circuit Breakers or Switches, it is used as control panels for remote control or displaying states of a device. It can provide device states to FRTU through contacts and has a Pass-through function that can operate Swtiches or Circuit Breakers by taking control output from FRTU. It also has an automatic battery seperated function to protect batteries, and monitor battery states and input power.