First Alert Smoke Alarm 9120B Battery Replacement

crwdns2935421:0crwdne2935421:0 crwdns2935423:0crwdne2935423:0

crwdns2935425:04crwdne2935425:0

crwdns2935419:0crwdne2935419:0

crwdns2936315:0crwdne2936315:0

crwdns2936325:0crwdne2936325:0

crwdns2931653:04crwdne2931653:0

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.

crwdns2944171:0crwdnd2944171:0crwdnd2944171:0crwdnd2944171:0crwdne2944171:0