X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector, 10-Year Battery Powered Fire and CO Alarm, SC06-W, 1-Pack - Amazon.com
AEGISLINK Interlinked Smoke Carbon Monoxide Detector Combo, Smoke and CO Detector Battery Powered, Wireless Interconnected Smoke and CO Alarm, Digital Display, SC-RF200, 1-Pack - Amazon.com
AEGISLINK Interlinked Smoke Carbon Monoxide Detector Combo, Smoke and CO Detector Battery Powered, Wireless Interconnected Smoke and CO Alarm, Digital Display, SC-RF200, 6-Pack - Amazon.com
First Alert 2 In 1 Smoke & Carbon Monoxide alarm Interconnected NOB 29054019059 | eBay
X-Sense AC Hardwired Combination Smoke and Carbon Monoxide Detector, Hardwired Interconnected Smoke and CO Detector Alarm with Replaceable Battery Backup, XP06, 1-Pack - Amazon.com
White Wireless Interconnected Smoke & Carbon Monoxide Alarm w/ Voice & Location by First Alert at Fleet Farm
Kidde Battery Operated Smoke Detector with Ionization Sensor and Wire-Free Interconnect 0919-9999 - The Home Depot
Interconnected Smoke and CO Alarm with Battery Backup
X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector, 10-Year Battery Powered Fire and CO Alarm, SC06-W, 3-Pack - Amazon.com