Hi Broadturn - That's a great question, we're not exactly sure how cold it can get before Fido starts having troubles. Would you like to help test that this winter?
RJ
I'd venture a guess that it could theoretically be used down to -20C based on what I see on most electronics datasheets. Nothing like the "old try and see" approach though.
Lets test how much cold a Fido can take
I'd venture a guess that it