Best Interconnected Smoke Alarms

Kidde Smoke Detector, Hardwired with Battery Backup & Interconnect, Battery Included

First Alert Battery Operated Wireless Interconnect Smoke and Carbon Monoxide Alarm & CO615A Carbon Monoxide Plug-in Alarm with Battery Backup and Digital Display

First Alert Hardwired Wireless Interconnect Smoke Alarm

Kidde i9010 Sealed Lithium Battery Power Smoke Alarm

First Alert SC9120LBLA Hardwire Smoke/Carbon Monoxide Alarm 10 Year Battery

Kidde I12040CA 120V AC (Hardwired) Ionization Smoke Alarm with 9V Battery Backup and Hush Button, White

Kidde P4010ACLEDSCA integrated 120 V AC wire-in smoke alarm with LED strobe light--10-year sealed battery backup and

First Alert 3120BA Hardwire Dual Photoelectric and Ionization Sensor Smoke Alarm with Battery Backup

Honeywell 5808W3 Wireless Photoelectric Smoke/Heat Detector

First Alert SA3210 Dual Sensor Smoke and Fire Alarm with 10-Year Sealed Battery