Last week, in the middle of the night, a thunderstorm caused the power to flicker and the Elk M1G alarm to sound. Both the ElkM1XSP and Aprilaire 8811 seemed to get fried. There are no entries in the M1 log. The Elk is connected to surge protector, and from what I understand, is powered from the battery. Did lightning hit a cat5 cable?
What can I do to prevent this from occuring again?
What can I do to prevent this from occuring again?