![First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup | First Alert First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup | First Alert](https://www.firstalertstore.com/store/images/products/large_images/sc9120b-first-alert-hardwire-combination-smoke-carbon-monoxide-alarm-battery-backup-4.jpg)
First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup | First Alert
![First Alert Direct Wire Combination Smoke And Carbon Monoxide Detector, 120 Volt With 9 Volt Battery Back Up SC9120B 6 PACK - Walmart.com First Alert Direct Wire Combination Smoke And Carbon Monoxide Detector, 120 Volt With 9 Volt Battery Back Up SC9120B 6 PACK - Walmart.com](https://i5.walmartimages.com/asr/4f7b0297-9fef-4b37-8cee-db212eaf8826_1.709c73e0f24b0f0382d0d998250b4b45.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
First Alert Direct Wire Combination Smoke And Carbon Monoxide Detector, 120 Volt With 9 Volt Battery Back Up SC9120B 6 PACK - Walmart.com
![First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector (CO) with Battery Backup. 6-Pack , White - Amazon.com First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector (CO) with Battery Backup. 6-Pack , White - Amazon.com](https://m.media-amazon.com/images/I/718onP4iwoL.jpg)
First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector (CO) with Battery Backup. 6-Pack , White - Amazon.com
![First Alert Brk 6-Pack Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com First Alert Brk 6-Pack Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com](https://mobileimages.lowes.com/productimages/08163474-7d23-4aab-899c-eb931d5ab07e/11204192.jpg?size=mpdhi)
First Alert Brk 6-Pack Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
![First Alert Brk 6-Pack Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com First Alert Brk 6-Pack Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com](https://mobileimages.lowes.com/productimages/6bef1463-7097-48b1-90e4-91f055ae231c/11204188.jpg)
First Alert Brk 6-Pack Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
![First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector (CO) with Battery Backup. 6-Pack , White - Amazon.com First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector (CO) with Battery Backup. 6-Pack , White - Amazon.com](https://m.media-amazon.com/images/I/718onP4iwoL._AC_UF894,1000_QL80_.jpg)
First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector (CO) with Battery Backup. 6-Pack , White - Amazon.com
![BRK Electronics First Alert SC6120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SC9120B) BRK Electronics First Alert SC6120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SC9120B)](https://www.electricbargainstores.com/v/vspfiles/photos/BRK-SC6120B-2T.jpg)
BRK Electronics First Alert SC6120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SC9120B)
![First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup | First Alert First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup | First Alert](http://www.firstalertstore.com/store/images/products/large_images/sc9120b-first-alert-hardwire-combination-smoke-carbon-monoxide-alarm-battery-backup.jpg)
First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup | First Alert
![First Alert BRK SC9120B-12 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 12-Pack - Amazon.com First Alert BRK SC9120B-12 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 12-Pack - Amazon.com](https://m.media-amazon.com/images/I/71Olpi1d0dL.jpg)
First Alert BRK SC9120B-12 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 12-Pack - Amazon.com
![First Alert BRK SC9120B 85-Decibel Ionization Hardwired Smoke and Electrochemical Carbon Monoxide Detector with Battery Backup - Walmart.com First Alert BRK SC9120B 85-Decibel Ionization Hardwired Smoke and Electrochemical Carbon Monoxide Detector with Battery Backup - Walmart.com](https://i5.walmartimages.com/asr/76b7f8a2-2aa0-4e06-8a92-d5d915b9b434_1.c516a635130485ae4373abc537c5666b.jpeg)
First Alert BRK SC9120B 85-Decibel Ionization Hardwired Smoke and Electrochemical Carbon Monoxide Detector with Battery Backup - Walmart.com
![First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup | First Alert First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup | First Alert](https://www.firstalertstore.com/store/images/products/large_images/sc9120b-first-alert-hardwire-combination-smoke-carbon-monoxide-alarm-battery-backup-5.jpg)
First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup | First Alert
![BRK Electronics SC9120B/SL177 Kit - Hard Wired T3 Smoke/ T4 Carbon Monoxide Ionization Alarm with Strobe BRK Electronics SC9120B/SL177 Kit - Hard Wired T3 Smoke/ T4 Carbon Monoxide Ionization Alarm with Strobe](http://www.diycontrols.com/images/Product/large/8187.jpg)