This OPC UA Property, of type UInt32, is the TimeDelayNormal parameter for the object’s event algorithm. It represents the time, in seconds, that the normal conditions must exist before a NORMAL event state is indicated.

It is normally used to represent the BACnet property Time_Delay_Normal. If the BACnet property Time_Delay_Normal is not present it has the same value as the BACnet property Time_Delay.