First Alert Smoke Alarm, 10-Year Sealed Battery Dual Sensor Detector With Test & Silence Button, SM310, 1-Pack

First Alert Interconnect Hardwire Dual Sensor Smoke Alarm With Battery Backup, SM300-AC, 6-Pack

First Alert Battery Operated 3V Photoelectric/Ionization Dual-Sensor Smoke & Fire Alarm

BRK Electronics First Alert SA350B 10 Year Sealed Lithium Battery Powercell Operated Dual Ionization Smoke Alarm (Upgraded To SMI110)

First Alert Dual Power Plug-In Photoelectric Electromechanical Carbon Monoxide Detector (FAT1039746)

First Alert Dual-Power Carbon Monoxide Plug-In Alarm With Battery Backup And Digital Display - 1039746

First Alert Dual Power Carbon Monoxide Alarm 614614 Digital Display

First Alert Co615 Dual-Power Plug-In Carbon Monoxide Detector With

First Alert Interconnect Battery-Operated 2-In 1 Smoke And Co Alarm With Voice Alerts

First Alert SMCO500V Battery 2-In-1 Smoke & CO Alarm With Voice Alerts - 5050097

First Alert Dual-Power Plug-In Carbon Monoxide Alarm With Digital Display And Battery Backup FAJ1039746 - 120V

First Alert Onelink Hardwired 120V Photoelectric Smart Carbon Monoxide And Smoke Alarm

First Alert Hardwired 120V Electrochemical/Ionization Carbon Monoxide And Smoke Alarm

BRK Heat Alarm: Hardwired, Battery Backup, Heat Detector, Thermistor, Hardwired Model: HD6135FB