First Alert Smoke Alarm 9120B Battery Replacement

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First Alert Smoke Alarm 9120B Battery Replacement: crwdns2935265:00crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

First Alert Smoke Alarm 9120B Battery Replacement: crwdns2935265:00crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

Remove the battery and dispose of it properly.
Replace the old battery with a new 9V battery and close the compartment.
You should hear a click to know that the compartment is secured.

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