I've been looking for a remote switch to put in my hangar to control my engine heater. I purchased a wemo smart plug today. After getting it home, I was looking through the paper work (imagine that!) and found that they recommend a temperature range of 0-40 C. This kind of defeats the purpose of a switch to control a heater. Does anyone have experience using the wemo switch in cold weather, maybe down to 10 F? Any issues or does it seem to work ok? Thanks