Kidde Smoke & Carbon Monoxide Detector, Hardwired Interconnect, Combination Smoke & CO Alarm with Battery Backup, Voice Alerts - Amazon.com
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
Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Warning and Smoke Detector, Hardwired Smoke Alarm with Battery Backup Included, Interconnect, Pack of 6 - Amazon.com
Smoke and Carbon Monoxide Detector, Smoke Detector Carbon Monoxide Detector Combo, Dual Sensor Smoke CO Alarm with Test/Silence, Photoelectric Fire Alarm and CO Detector with Replaceable Battery - Amazon.com
4 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm for Home, Kitchen - Amazon.com