BRK Electronics First Alert CO250B6CP 9V DC Battery Operated Tamper Resistant Electrochemical Carbon Monoxide (CO) Alarm - Contractor 6-Pack

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

BRK Electronics First Alert CO615B 120V AC/DC Plug-in with 2 AA Batteries Backup Electrochemical Carbon Monoxide (CO) Alarm with Digital Display

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

BRK Electronics First Alert FG250LB 9V DC Lithium Battery Operated Ionization Smoke Alarm

BRK Electronics First Alert SCO500 OneLink Wireless Battery Smoke/CO Combo Alarm with Voice (Upgraded to SMCO500V)

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

BRK Electronics First Alert 9120B-48P 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm - Box 48-Pack (Upgraded to SMI100-AC)

BRK Electronics First Alert SA511 OneLink Wireless Battery Smoke Alarm with Voice (Upgraded to SM500V)

BRK Electronics First Alert SA500 OneLink Wireless Battery Smoke Alarm with Voice (Upgraded to SM500V)

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 SMCO110V-AC (1046791) 120V AC/DC Smoke and Carbon Monoxode Combo Alarm with 10-Year Sealed Lithium Battery Backup and Voice

BRK First Alert SMI100 (1046832) Battery Operated Ionization Smoke Alarm

BRK First Alert SM300-AC (1046759) Interconnect Hardwire Dual Sensor Photoelectric and Ionization Smoke Alarm with Battery Backup

BRK Electronics First Alert PR700AB Low Profile 9V Alkaline Battery Operated Photoelectric Smoke Alarm

BRK Electronics First Alert 83RI 9V DC Battery Operated Ionization Smoke Alarm (Upgraded to SMI100)