First Alert CO615 Plug-In Carbon Monoxide Alarm with Battery Backup & Backlit Digital Display | First Alert
UGI Urges Residents to Recognize Signs of Carbon Monoxide During Heating Season - BCTV
Smoke and Carbon Monoxide Detector 10-Year Lifespan, AEGISLINK Photoelectric Fire Alarm and Electrochemical CO Alarm with Test/Silence Button, with Replaceable Battery, SC240, 6 Pack - Amazon.com