If your SimpliSafe sensor offline message appears, it means your sensor has lost connection with the base station. This guide explains common reasons why sensors go offline and offers easy troubleshooting steps to restore connectivity. Learn how to check battery life, signal strength, and device placement to get your sensors back online quickly. Keep your home security fully operation... https://simplsecure.com/red-light-issue-with-the-simplisafe-base-station-how-should-i-fix-it/