AlarmSourceExt is the abstract superclass of all Baja control alarming algorithms. The AlarmSourceExt is available in the alarm module. Some common alarm source extensions include OutOfRangeAlarmExt, BooleanChangeOfStateAlarmExt, BooleanCommandFailureAlarmExt, EnumChangeOfStateAlarmExt and EnumCommandFailureAlarmExt.

Refer to About alarm extensions and components for more details.