EC-MASTER controller design for large scale remote control and monitor system. Acts as a master to interface with EC-Node and EC-IO Module to expand a addressable remote monitoring and control system for different kinds of building automation system, such as fire alarm status, climate control system for automated door and window etc. - Each EC-MASTER is allow to connect 128 no of NV-Node (max.) - Expandable to large EC-Master network via TCP/IP - Flexible strategy programming - Provide internal watchdogs to increase system reliability - Web-server capability for remote access with mobile or standard browser