BRK Electronics First Alert SA4919 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm (Upgraded to SMI100-AC)

First Alert BRK SA4120 120V AC Hardwired Ionization Smoke Alarm (Upgraded to SMI100-AC)

BRK Electronics First Alert SA500 OneLink Wireless Battery Smoke Alarm with Voice (Upgraded to SMCO500V)

BRK Eletronics First Alert CO511 OneLink Wireless Battery CO Alarm with Voice (Upgraded to SMCO500V)

BRK Electronics First Alert SA86C 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm (Upgraded to SMI100-AC)

BRK Electronics First Alert SA4919C 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm (Upgraded to SMI100-AC)

BRK Electronics First Alert SA501 OneLink Wireless Battery Smoke Alarm with Voice (Upgraded to SMCO500V)

BRK Electronics First Alert SA4121C 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm (Upgraded to SMI100-AC)