Advantech AIMB-218 Series User Manual page 54

3.2.2.5 NCT6126D HW Monitor
CPU Warning Temperature [Disabled]

Use this to set the CPU warning temperature threshold. When the system
reaches the warning temperature, the speaker will beep.
ACPI Shutdown Temperature [Disabled]

Use this to set the ACPI shutdown temperature threshold. When the system
reaches the shutdown temperature, it will be automatically shut down by ACPI
OS to protect the system from overheating damage.
AIMB-218 User Manual 44