I downloaded the software to test it, but since I don't have RAID setup, the software doesn't display anything. However, for most applications, regardless of the region used, the temperature is always displayed in Celsius. For a Fahrenheit value, you should see slightly higher numbers. A temperature for a HDD should never be above 50 degrees. I also visited the official website, but didn't find anything specific.
The developers can give you additional details: https://www.high-rely.com/contact-backup-experts/