If you have an ac hardwired interconnected alarm you will need to remove the quick connect wire harness from the back.
Fire alarm battery replacement.
No one wants to realize once the inspector arrives or after their business has a fire that their panel is malfunctioning due to low or no battery life.
Buy a new smoke detector.
Mark the date you changed your battery on the inside of the smoke alarm.
Fire safety experts recommend you replace your smoke alarm battery two times a year.
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Using simplex fire alarm replacement batteries for your fire alarm system panel is paramount to its operation during an emergency and can even lead you to trouble with code enforcement if overlooked.