Smoke and Carbon Monoxide Detector Battery Powered Dual Sensor Combination Smoke & CO Alarm with LCD Screen, Led Indicator and Loud Sound Alert, Complies with UL 217 & UL 2034 Standards - - Amazon.com
Carbon Monoxide Detector,CO Gas Monitor Alarm Detector,CO Sensor with LED Digital Display for Home,Depot,Battery Powered - - Amazon.com
CMD5B1 Series – Carbon Monoxide Monitor – Greystone Energy Systems