Ron is correct. Bear in mind, most of these fire alarm panels are "proprietary" in nature meaning that you may have to be both trained and authorized to open up the panel and/or change the programming. If it's an older, hard-wired type system you may be in luck. However, from what I understand you now have to be NICET certified, at least level 2 to work on these systems. My advice - Make an inquiry before you commit to do any work.