Christmas is coming fast, and I wanted to control all the Christmas lightings from X10. The receptacle outside the house uses GFC. I understand X10 doesn't make one but I was just wondering if a plug-in appliance module can do the job?

The weather in where I live can get very cold in the winter time (-20C). I don't know if an appliance module can handle such a low temperature. If it can handle it, I can go to Home Depot and get a big enclosure to cover the appliance module as well as the whole GFC so it's insulated.

Thanks

Simon