This OPC UA Property, of type UInt32, indicates the numeric value of the BACnet Notification Class object used in event initiating objects to refere to the BACnet Notification Class object.

This Property, of type Byte[3], shall convey the priority to be used for event notifications for TO_OFFNORMAL, TO_FAULT, and TO_NORMAL events, respectively. Priorities shall range from 0 - 255 inclusive. A lower number indicates a higher priority.

This OPC UA Property, of DataType BACnetEventTransitionBits, represents the BACnet property Ack_Required. The BACnetEventTransitionBits DataType is defined in 10.3.3.