APM 1 works in -20°C
Just a normal winter day where I come from.
I would be more worried about keeping the batteries warm on a day like that, and snapping plastic and foam parts.
At least you wouldn't have your ESC overheat in that kind of temp!
Sorry Ahmed, I don't know the specs.
Veikko have you tested it at -20C ?
Yes I have, there was no problem.