OptionalactionReference to actions to be triggered when the conditions are satisfied.
OptionalcontentContent expression, for example, to trigger only when the relay value is on. Trigger based on content data in event.
OptionalextensionTopic expression, for example, to trigger only for relays. Trigger based on event topic.
Action Trigger configuration data type contains mandatory Topic Expression (Section Topic Filter in [Core Specification]), optional Message content expression (Section Message Content Filter in [Core Specification]), and set of actions to be triggered.