Shop first alert replacement smoke detectors

Sponsored
About our ads
$13.38
First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
$13.38
First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
$64.98
First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
Amazon.com
Free shipping
$64.98
First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
Amazon.com
$31.99
$34.99
First Alert SM210, 10-Year Sealed Battery Smoke Alarm With Slim Profile Design, 1-Pack
Amazon.com
$31.99
$34.99
First Alert SM210, 10-Year Sealed Battery Smoke Alarm With Slim Profile Design, 1-Pack
Amazon.com
$24.59
First Alert Smoke Alarm, 10-Year Sealed Battery Detector With Test & Silence Button, SMI110, 1-Pack
Amazon.com
$24.59
First Alert Smoke Alarm, 10-Year Sealed Battery Detector With Test & Silence Button, SMI110, 1-Pack
Amazon.com
$29.99
First Alert SMI100-AC Interconnect Hardwire Smoke Alarm With Battery Backup - 5050051
Acme Tools
$29.99
First Alert SMI100-AC Interconnect Hardwire Smoke Alarm With Battery Backup - 5050051
Acme Tools
$49.81
$64.99
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup, SMICO100-AC, 1-Pack
Amazon.com
Free shipping
23% off
$49.81
$64.99
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup, SMICO100-AC, 1-Pack
Amazon.com
$59.07
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup And Voice & Location Alerts, SMCO100V-AC, 1-
Amazon.com
Free shipping
$59.07
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup And Voice & Location Alerts, SMCO100V-AC, 1-
Amazon.com
First Alert & Google Nest Connected Life-Safety Partnership | Resideo
First Alert & Google Nest Connected Life-Safety Partnership | Resideo
Mar 28, 2025
resideo.com
BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
1:19
BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm …
Jun 1, 2006
amazon
Smoke Detector Testing
0:38
Smoke Detector Testing
46.5K viewsAug 25, 2014
YouTubeNorCalDude599
Vintage FireX FXW-1 Smoke Detector
8:32
Vintage FireX FXW-1 Smoke Detector
14.6K viewsJan 10, 2019
YouTubeBA&F Vintage
First Alert smoke alarm P1210 - 10 year battery Review
3:58
First Alert smoke alarm P1210 - 10 year battery Review
111.4K viewsNov 11, 2017
YouTubeSterling W
How To Change Smoke and CO Alarm Batteries
0:47
How To Change Smoke and CO Alarm Batteries
127.4K viewsFeb 22, 2017
YouTubeFirst Alert Store
Replace battery in Ei141 smoke alarm
1:48
Replace battery in Ei141 smoke alarm
2.2M viewsMay 14, 2011
YouTubeSafelincs Ltd
3:13
How to replace Kidde Smoke Detector
89.1K viewsApr 24, 2021
YouTubeHowTo
5:15
How-To Change the Batteries in a FirstAlert smoke alarm
87.6K viewsDec 24, 2011
YouTubeDaSamNudge
2:34
New Battery & Smoke Detector Keeps Chirping How To Fix
1.7M viewsMay 23, 2014
YouTubeAndrew DIY
2:04
DIY Replace a Smoke Alarm - Battery Operated (see Disclaimer)
23.7K viewsDec 12, 2017
YouTubeColton Crump DIY
2:56
Smoke Alarm Won't Stop Chirping Even With New Battery
272.5K viewsMar 5, 2021
YouTubeAndrew DIY
5:31
Stop A Smoke Alarm Chirping With 3 Quick Fixes
3.7M viewsJun 30, 2021
YouTubeEveryday Home Repairs
3:06
How to replace battery in First Alert Smoke Detector
162.6K viewsDec 28, 2019
YouTubeJonathan Collegio
1:08
First Alert Hardwired Smoke Alarm with Battery Backup (9120B)
121.5K viewsAug 2, 2016
YouTubeFirst Alert Store
0:46
How to Change Your Smoke Detector Battery | Aire Serv
39.4K viewsApr 6, 2020
YouTubeAire Serv Corporate
11:41
First Alert Smoke Detector CHIRP Sound HOW TO RESET FIX SOLV…
281.2K viewsAug 22, 2020
YouTubeLEARNINGCHORDS
2:42
How To Install a Smoke Detector | The Home Depot
335.8K viewsAug 16, 2021
YouTubeThe Home Depot
2:49
How to install a First Alert Smoke & Carbon Monoxide Alarm | DIY
98.2K viewsDec 4, 2020
YouTubeCreativeProcessDIY
1:10
First Alert 10-Year Sealed Battery Operated Photoelectric Smoke Ala…
49.5K viewsAug 8, 2016
YouTubeFirst Alert Store
12:51
How to Replace Smoke Alarm FireX 4618 / Smoke Detectors Without R…
6.5K viewsMar 17, 2021
YouTubeDAD's Channel
1:29
First Alert Hardwired Photoelectric Smoke Detector with Battery Back…
41.8K viewsJan 25, 2016
YouTubeFirst Alert Store
10:44
First Alert Smoke And Carbon Monoxide Detector Installation
78.6K viewsJul 14, 2020
YouTubeAaron Goss
9:25
How to Replace a Smoke Detector's Batteries That Keeps Beeping Firs…
61K viewsJan 7, 2018
YouTubeALLCHECKOUT
6:08
How To Replace a Hardwired Smoke Detector | Why These Are The Best!
756.5K viewsAug 30, 2020
YouTubeDaru Dhillon
0:52
First Alert BRK Smoke & Fire Detector - How To Change 9 Volt …
8.8K viewsFeb 1, 2020
YouTubePaul79UF
0:33
How to unplug a smoke detector (easy, only 5 seconds…)
467.1K viewsAug 13, 2020
YouTubeDIY-time Tech
8:49
SMOKE DETECTOR First Alert BRK9120B Smoke Detector HOW …
16.2K viewsSep 9, 2020
YouTubeLEARNINGCHORDS
8:44
How to replace old hard wired smoke detectors - easy DIY
318.4K viewsDec 5, 2020
YouTubePlatoon Garage
See more videos
Static thumbnail place holder

Shop first alert replacement smoke detectors

Sponsored
About our ads
$13.38
First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
$13.38
First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
$64.98
First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
Amazon.com
Free shipping
$64.98
First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
Amazon.com
$31.99
$34.99
First Alert SM210, 10-Year Sealed Battery Smoke Alarm With Slim Profile Design, 1-Pack
Amazon.com
$31.99
$34.99
First Alert SM210, 10-Year Sealed Battery Smoke Alarm With Slim Profile Design, 1-Pack
Amazon.com
$24.59
First Alert Smoke Alarm, 10-Year Sealed Battery Detector With Test & Silence Button, SMI110, 1-Pack
Amazon.com
$24.59
First Alert Smoke Alarm, 10-Year Sealed Battery Detector With Test & Silence Button, SMI110, 1-Pack
Amazon.com
$29.99
First Alert SMI100-AC Interconnect Hardwire Smoke Alarm With Battery Backup - 5050051
Acme Tools
$29.99
First Alert SMI100-AC Interconnect Hardwire Smoke Alarm With Battery Backup - 5050051
Acme Tools
$49.81
$64.99
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup, SMICO100-AC, 1-Pack
Amazon.com
Free shipping
23% off
$49.81
$64.99
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup, SMICO100-AC, 1-Pack
Amazon.com
$59.07
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup And Voice & Location Alerts, SMCO100V-AC, 1-
Amazon.com
Free shipping
$59.07
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup And Voice & Location Alerts, SMCO100V-AC, 1-
Amazon.com