Ordering Information Family Code 7 Product family for the feeder terminal unit REF 542plus Application Areas 6 Normal operation Binary I/O Modules Binary I/O Modules Binary I/O Modules Description: Software level : Base V5 = With Unicode fonts Limitation of protection functionality by software license. Please contact your local ABB organization for more detailed information. Software level Base can only be ordered by ABB switchgear companies and is the same level as software level Distance.