The HighLimit value represents the upper limit of the range considered normal.
The LowLimit value represents the lower limit of the range considered normal.
The Deadband value represents the deadband that is applied to the limit before a return to Normal event state is indicated.
This OPC UA Property, of DataType BACnetLimitEnable, shall indicate three separate flags that enable and disable the delivery of TO_OFFNORMAL, TO_FAULT, and TO_NORMAL notifications. The DataType BACnetLimitEnable is defined in 10.3.4.