First Alert Hardwired Ionization Sensor Smoke Detector in the Smoke Detectors department at

First Alert Hardwired 120V Ionization Carbon Monoxide and Smoke

First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO

First Alert SA521CN-3ST Wireless Interconnect Hardwired Smoke Alarm

First Alert Battery Operated 9V Ionization Smoke Alarm with Hush

First Alert Hardwired 120V Ionization Carbon Monoxide and Smoke

First Alert Hardwired 120V Ionization Carbon Monoxide and Smoke

FIRST ALERT 3120B Smoke Alarm, Ionization, Photoelectric Sensor

First Alert Hardwired Ionization Smoke Alarm with Battery Backup

First Alert Hardwire Dual Photoelectric and Ionization Sensor

First Alert BRK 3120B Hardwired Photoelectric and Ionization Smoke

First Alert Hardwired 120V Ionization Carbon Monoxide and Smoke

First Alert BRK 3120B Hardwired Photoelectric Ionization Smoke