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 SC9120BFF 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)

First Alert BRK SA4121B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Silence Button (Upgraded to SMI100-AC)

Focus Industries SL-14-STU 12V Extruded Aluminum Hanging Cylinder, Stucco Finish

Kidde Firex SMACFEX + 20-9003 Replacement Kit to Replace Old Kidde 120V AC Wire-in Smoke Alarm