AEON DSB05: Changing temperature from Farehnheit to Celsius

My AEON DSB05 is showing temperature in Farehnheit.

I wonder how can I change the settings so I can read the temperature in Celsius.

I am currently using Vera FirmWare Version: 1.7.619

The AEON DSB05 ZWUS is running the 1.18 firmware.

I have no clue how to change that. I checked several posts here in this forum, but no clue…

Documentation is still a problem.