How To Remove Battery From First Alert Fire Alarm. Generally once you remove the cover of the detector you will be able to see where the battery. Replace the new battery in the smoke.
When installing the battery in your alarm make sure they match the same polarity in the battery drawer. These mechanisms come with a battery backup as well as a mute button. Generally once you remove the cover of the detector you will be able to see where the battery.
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How to Replace a Battery. First turn off the AC power at the circuit breaker or fuse box. Marty from Liberty Homes UT will walk you through the steps to stop the chirping noise. How to Replace a 9V Battery.
