Best Hard Wired Smoke Detector

First Alert Battery Operated Smoke and Carbon Monoxide Alarm, White, PRC700A-6

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

Combination Smoke and Carbon Monoxide Detector Alarm, 2-Pack Beeps Warning Smoke and CO Alarms for Basements Travel Home Office House Bedroom Living Room Car, Battery Operated, Comply with UL 217/2034

FIRST ALERT Smoke and CO Alarm, SC7010BA, White

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

DYWL SECURITY Carbon Monoxide Detectors Portable Carbon Monoxide Detector for Travel Carbon Monoxide Detector Plug in Wall with LED Digital Display Voice Light Plug and Play - 2Pack

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

First Alert SC9120BA Hardwire Combination Carbon Monoxide and Smoke Alarm

Google Nest Protect - Wired

Carbon Monoxide Detector,CO Alarm Detector with Digital Display and Sound Alarm for Home 2pcs