Best Hardwired Smoke Detector

First Alert Hardwired Wireless Interconnect Smoke Alarm

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

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

First Alert 9120BA Hardwire Smoke Alarm w/ 9V Battery, Smoke Detector

First Alert SC9120BA Hardwire Combination Carbon Monoxide and Smoke Alarm

FIRST ALERT Smoke and CO Alarm, SC7010BA, White

Kidde 21026515 120V Hardwired Smoke and Carbon Monoxide Detector Alarm Lithium Battery

Kidde P4010ACLEDSCOCA 120 VAC Integrated 3-in-1 LED Strobe and 10-Year Talking Smoke & CO Alarm

BRK Electronics 9120BA Hardwired Ionization Smoke Alarm with 9V Battery Backup

Nest Protect Smoke & Carbon Monoxide Alarm, Wired (2nd Gen) & Nest Protect Smoke & Carbon Monoxide Alarm, Battery (2nd gen)