According to the BACnet protocol documentation:

Defines a standardized object that represents and contains information required for the distribution of event notifications within BACnet systems. Notification Classes are useful for event-initiating objects that have identical needs in terms of how their notifications should be handled, what the destination(s) for their notifications should be, and how they should be acknowledged.

Objects of type notificationClass have the following properties:

•ackRequired

•ackedTransitions

•description

•eventDetectionEnable

•eventEnable

•eventMessageTexts

•eventMessageTextsConfig

•eventState

•eventTimeStamps

•notificationClass

•notifyType

•objectIdentifier

•objectName

•objectType

•priority

•profileLocation

•profileName

•propertyList

•recipientList

•reliability

•reliabilityEvaluationInhibit

•statusFlags

•tags