Best Hard Wired Smoke Detector

FireAngel Optical Smoke Alarm 2-Pack - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - White

FireAngel Optical Smoke Alarm - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - White

Kidde 10SCO Combination 10 Year Life Carbon Monoxide and Smoke Alarm (1)

Wireless Interlinked Smoke, Heat & Carbon Monoxide Alarm Bundle | Scotland & England Law Compliant | 10 Year Battery Life | CE & BS Certified | LINKD Alarms | Pre Linked | UK Phone & Email Support

Google Nest Protect - Smoke Alarm And Carbon Monoxide Detector (Battery)

Wireless Interlinked Smoke,Heat and Carbon Monoxide Alarm Kit,Pre-linked,Compliant with Scotland & England Law, Remote Slience Function(3 Smoke + 1 CO + 1 Heat)

XINDUM Wireless Interlinked Smoke Alarms for Home, Heat Detector, Carbon Monoxide Detector with LCD Digital Display, Remote Controller, Fire Alarms with 10 Year Battery, Fire Detectors Bundle for Home

X-Sense Smoke Alarm for Home, 10-Year Battery Fire Alarm, LED Indicator & Silence Button, Smoke Detector Battery Operated, Conforms to EN 14604 Standard, SD11

Google Nest Protect - Smoke Alarm And Carbon Monoxide Detector (Wired)

Mains Powered Smoke Alarms, Interlinked Wired Alarm Smoke Detector 1 Year Replaceable Battery Back-up, Fire Alarm with LED Indicator Silence Button EN 14604 Standard (4-PACK)