Change Smoke Alarm Battery. First Alert 9120B
2:28
Change Smoke Alarm Battery. First Alert 9120B
764.3K viewsMar 31, 2018
YouTubeBecause Stuff Breaks with Justin Peters
LOCKED Battery Drawer; First Alert Smoke Alarm Battery Change (SC9120B)
2:30
LOCKED Battery Drawer; First Alert Smoke Alarm Battery Change (SC9120B)
300.1K viewsOct 6, 2021
YouTubeWill Hobbs
How to replace battery in First Alert Smoke Detector
3:06
How to replace battery in First Alert Smoke Detector
165.1K viewsDec 28, 2019
YouTubeJonathan Collegio
How to Change a Smoke Detector Battery
1:24
How to Change a Smoke Detector Battery
564 viewsJul 6, 2022
YouTubeBasic Works
How To Install New Battery On Smoke Detector Carbon Monoxide Detector Fix That Annoying Beep Sound!
4:07
How To Install New Battery On Smoke Detector Carbon Monoxide Detector Fix That Annoying Beep Sound!
252.2K viewsOct 31, 2018
YouTubeTipsNNTricks
How to Replace First Alert Smoke Detector Battery
1:52
How to Replace First Alert Smoke Detector Battery
228.5K viewsApr 20, 2023
YouTubeHowTo
Smoke Detector 9V Battery Replacement | Stop the Chirping!
2:33
Smoke Detector 9V Battery Replacement | Stop the Chirping!
80.5K viewsJul 19, 2025
YouTubeFobBattery
2:58
How to Change Batteries on First Alert Smoke or CO Alarm
94.1K viewsDec 5, 2023
YouTubeDIY Life Tech
2:08
How to replace a 9V battery in First Alert Smoke Detector
4.4K viewsAug 30, 2023
YouTubeTom Leeman
4:25
How to Install Hard Wired Smoke Detector - Easy Installation First Alert Smoke Detector Model 9120B
97.7K viewsJan 16, 2023
YouTubeTheRenderQ
See more
Static thumbnail place holder