We'll show you how to change the battery in an alarm system so that your system can be fully functional, even during a power outage. How will you know if you need to change your alarm system battery? You'll see a low battery warning on your alarm's touchpad. It typically says LOW BAT, BAT or SYSTEM LO BAT. You might also hear a beeping noise to alert you that the battery needs to be replaced. Your alarm system's battery suppliesRead More...The post How to Change the Battery in an Alarm System appeared first on Home Security Systems Bay Area | All-Guard Alarm Systems.