Best First Alert Smoke Detectors

FIRST ALERT Plug-In Carbon Monoxide Detector with Battery Backup, (Pack of 3), CO605

First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack

First Alert SMI100, Battery-Operated Smoke Alarm, 3-Pack

First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup, 1-Pack

FIRST ALERT SC9120B Corded Electric Combination Alarm with Adapter Plugs for Easy Replacement

FIRST ALERT BRK SC7010BV-3 Hardwired Talking Photoelectric Smoke and Carbon Monoxide (CO) Detector, 3-Pack , White

First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack

First Alert SMI100-AC, 9120B Replacement Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack

First Alert SMICO100, Battery-Operated Combination Smoke & Carbon Monoxide Alarm, 1-Pack

First Alert Slim Photoelectric Smoke Alarm with 10-Year Sealed Battery, PR710, White