My electric dog fence alarm beeps like it has a break in the line somewhere, but only when it gets cold. I had a tech. from Dogwatch, (retailer), come out and he said that the line had a bad patch of wire and replaced it. That seemed to work at the time but the problem's back. The problem seems to occur in colder weather. The first time it happened it was in the teens, it was repaired while it was warm (in the thirties) then the problem reappeared when the temp.droped back in the teens about three weeks later
The company wants eighty dollars to come out and find the break in the line that they said was not there in the first visit. The plug in module is warranted for life. How do I test these things myself?