I installed one of the $500 systems in our vacation home 600 miles away from where we live. The system has been working perfectly for 3 months but recently we have been getting errors from a garage door sensor. The sensor posted a "no communication" error a week ago and I disabled that one sensor at that time since we had no plans to be at that location for another month or so. Two days later, the sensor was restored and began working again. Next day, the sensor gave us another error message "no communication" for about one hour and then it was restored.
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