In preparation for the winter, I plugged in my Switchbox Control today in my office. I have been paying $25 every three months for the UltraSIM and it is not responding. It didn't work well last winter as it took 20min to never to respond to SMS messages to turn on/off. Does anyone have an alternative solution? My hangar is a 25 minute drive away and I want something reliable. I am ready to throw my Switchbox away.