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 SM6W01)

BRK Electronics First Alert CO9B10D DC 10-Year Sealed 3 V Lithium Battery Operated Carbon Monoxide Alarm with Digital Display

BRK Electronics First Alert CO7P01 Plug-In Carbon Monoxide Alarm with 9V Battery Backup

BRK Electronics First Alert CO7B01D DC 9V Alkaline Battery Operated Carbon Monoxide Alarm with Digital Display

BRK Electronics First Alert CO7P01D Plug-In Carbon Monoxide Alarm with AA Battery Backup and Backlit Digital Display

BRK Electronics First Alert SC610 DC 10-Year Sealed Battery Operated Combination Carbon Monoxide and Photoelectric Smoke Alarm

BRK Electronics First Alert SM610 DC 10-Year Sealed Battery Operated Photoelectric Smoke Alarm

BRK Electronics SMCO600NV Battery Powered SC5 Smart Smoke & Carbon Monoxide Alarm

BRK First Alert SMCO200V (1046795) Battery-Operated 2-in-1 Smoke Alarm & CO Alarm with Voice Alerts

BRK First Alert SM200 (1046728) Battery powered, Low Profile, Smoke Alarm with Replaceable Battery and Silence Feature

BRK Electronics First Alert PRC700VB Low Profile 2 AA Batteries Operated Photoelectric Smoke Alarm and Carbon Monoxide Combo Alarm with Voice

BRK Electronics First Alert CO250LBT Z-Wave Enabled 9V DC Lithium Battery Operated Tamper Resistant Electrochemical Carbon Monoxide (CO) Alarm