First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery - Walmart.com
First Alert BRK Battery-operated Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery , White, 1 Pack - Combination Smoke Carbon Monoxide Detectors - Amazon.com
FIRST ALERT BRK SC9120FF Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 pack , White - Yahoo Shopping
First Alert BRK SC9120B-12 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 12-Pack - Amazon.com