« Last post by posde on November 18, 2014, 12:19:48 am »
Did you check with the manufacturer?
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There is nothing in the template that decides what unit the temperature is interpreted as. All my devices works as expected (I also use Celsius) and I don't recall having to do anything special. But I do think some devices has a configuration setting to toggle the unit it interprets values as - you should read the manual for your device.
See page 5