Building automation systems helps intelligent buildings to increase energy efficiency and energy saving. It offers web-enabled and browser-based components to allow engineers to be much more flexible and to easily control equipment in building automation systems. WebAccess HMI/SCADA software provides remote access and management capabilities for human machine interface and SCADA control, BACnet remote IO modules are designed for building automation systems that include open database management and standard protocols. Besides, Web-enabled HMI platform and Web-enabled DDC; IO modules are suitable for web browsers and help engineers develop building automation system applications for intelligent building. Finally, Advantech's Energy Data Concentrators can be integrated with a wide range of building automation equipment to make it easier to control systems, increase energy efficiency and energy saving.