How To Remove First Alert Smoke Alarm Battery. How do you unlock a First Alert smoke detector. Once you remove the cover of the detector its easy to see how to change a smoke alarm battery.
To stop the beepingTHE TEST BUTTON WILL TEMPORARILY SILENCE THE DEVICEFor m. These mechanisms come with a battery backup as well as a mute button. Remove the alarm from the ceiling or wall.
Replace the battery cover and hold the smoke.
First Alert Sa9120bcn 120vac Hardwired Smoke Alarm With Battery Backup First Alert Store. It is normal for smoke alarms to go off and sound briefly up to 5-10 seconds when you install a new battery or when they are powered up. With the battery removed press and hold the test button for 15-20 seconds. These mechanisms come with a battery backup as well as a mute button.
