First Alert 9120B 烟雾报警器电池更换

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First Alert Smoke Alarm 9120B Battery Replacement: crwdns2935265:00crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

First Alert Smoke Alarm 9120B Battery Replacement: crwdns2935265:00crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

First Alert Smoke Alarm 9120B Battery Replacement: crwdns2935265:00crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

Remove the alarm by rotating it counter clockwise in the mount.
The alarm should fall off once rotated enough. The cable should be the only thing holding it in place if done correctly.

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