First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup

SYSTEM SENSOR CO1224T 12/24 Volt, 4-Wire, System-Monitored C02 Carbon Monoxide Detector W/ Realtest Technology

Simplisafe Smoke & Carbon Monoxide Detector

4-In-1 Combination Gas Leak Detector And Carbon Monoxide Detectors - Carbon Monoxide Detectors Plug In - Dual Sensor Gas & Co Detector, Temperature &

FIRST ALERT BRK SC9120B-3 Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup, White, Pack Of 3

Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Interconnectable LED Warning Light Indicators, 30CUA10

Smoke Detector And Carbon Monoxide Detector Combo With LED Indicators, 2 in 1 CO & Smoke Alarm, Battery Operated Smoke And Carbon Monoxide Detectors 3

USI Electric 3-In-1 Smoke, Fire And CO Alarm With 10 Year Sealed Battery Power

System Sensor Carbon Monoxide Alarm: Hardwired, CO Detector, Electrochemical, Hardwired Model: CO1224TR