BRK Electronics First Alert SC9120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SMICO100-AC)

First Alert SC9120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SMICO100-AC)

BRK Electronics First Alert SCO2B 9V Alkaline Battery Operated Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SMICO100)

BRK Electronics First Alert SC9120LBL 120V AC/DC Hardwired with Lithium Battery Back Up and Locked Battery Drawer Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SMICO105-AC)

BRK Electronics First Alert SC7010B 120V AC/DC Hardwired with 2 AA Batteries Backup Photoelectric Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SMCO100V-AC)

First Alert SC7010B 120V AC/DC Hardwired with 2 AA Batteries Backup Photoelectric Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SMCO100V-AC)

BRK Electronics First Alert SC6120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SMICO100-AC)

BRK Electronics First Alert SC7010BV 120V AC/DC Hardwired with 2 AA Batteries Backup Photoelectric Smoke Alarm and Carbon Monoxide Combo Alarm with Voice (Upgraded to SMCO100V-AC)

First Alert SCO5CN 2 AA Batteries Operated Photoelectric Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SMCO210)

First Alert SC9120BFF 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SMICO100-AC)

BRK Electronics First Alert PRC710B Low Profile 10 Year Sealed Battery Operated Lithium Power Tamperproof Photoelectric Smoke and Carbon Monoxide Combo Alarm (Upgraded to SMCO210)

BRK Electronics First Alert SCO5B 2 AA Batteries Operated Photoelectric Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SMCO210)

BRK First Alert SMCO110LED-AC (1046789) Hardwired Combo Smoke & CO Alarm with LED Strobe &10-Yr Battery Backup

BRK Electronics First Alert GCO1B 120V AC Plug-in Explosive Gas/CO Combo Alarm

BRK First Alert SMICO100-AC (1046871) 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm

BRK First Alert SMCO100V-AC (1046781) Interconnect Hardwire Photoelectric Smoke & CO Alarm with Battery Backup & Voice