![First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup - Combination Smoke Carbon Monoxide Detectors - Amazon.com First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup - Combination Smoke Carbon Monoxide Detectors - Amazon.com](https://m.media-amazon.com/images/I/71bOL6iOrqL.jpg)
First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup - Combination Smoke Carbon Monoxide Detectors - Amazon.com
![Smoke and Carbon Monoxide Detector, Smoke Detector Carbon Monoxide Detector Combo, Dual Sensor Smoke CO Alarm with Test/Silence, Photoelectric Fire Alarm and CO Detector with Replaceable Battery - Amazon.com Smoke and Carbon Monoxide Detector, Smoke Detector Carbon Monoxide Detector Combo, Dual Sensor Smoke CO Alarm with Test/Silence, Photoelectric Fire Alarm and CO Detector with Replaceable Battery - Amazon.com](https://m.media-amazon.com/images/I/71Jr47vc1FL._AC_UF894,1000_QL80_.jpg)
Smoke and Carbon Monoxide Detector, Smoke Detector Carbon Monoxide Detector Combo, Dual Sensor Smoke CO Alarm with Test/Silence, Photoelectric Fire Alarm and CO Detector with Replaceable Battery - Amazon.com
![First Alert 10-Year Battery Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com First Alert 10-Year Battery Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com](https://mobileimages.lowes.com/productimages/d24f936f-90fb-4976-87c2-c953154858a5/00416403.jpg)
First Alert 10-Year Battery Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
![Google Nest Protect 2nd Generation (Battery) Smart Smoke/Carbon Monoxide Alarm White S3000BWES - Best Buy Google Nest Protect 2nd Generation (Battery) Smart Smoke/Carbon Monoxide Alarm White S3000BWES - Best Buy](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/8077/8077101_rd.jpg)
Google Nest Protect 2nd Generation (Battery) Smart Smoke/Carbon Monoxide Alarm White S3000BWES - Best Buy
![First Alert SC7010B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup - Walmart.com First Alert SC7010B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup - Walmart.com](https://i5.walmartimages.com/seo/First-Alert-SC7010B-Hardwired-Smoke-and-Carbon-Monoxide-CO-Detector-with-Battery-Backup_017106e9-aec2-40ce-ab3f-12e903657071.30c9cd14cea6029c11ce7a4a9d7fe2d0.jpeg)
First Alert SC7010B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup - Walmart.com
![Google Nest Protect - Smoke Alarm and Carbon Monoxide Detector - Battery Operated S3000BWES - The Home Depot Google Nest Protect - Smoke Alarm and Carbon Monoxide Detector - Battery Operated S3000BWES - The Home Depot](https://images.thdstatic.com/productImages/17692e35-1f5a-48cd-9b40-c9e7dc8f44ea/svn/google-smoke-and-carbon-monoxide-detectors-s3000bwes-64_1000.jpg)