Amazon.com: Honeywell Ademco 5800CO Wireless CO Detector : Tools & Home Improvement
PROSiXCOMBO - Resideo Honeywell Home Wireless Combo Smoke/Carbon Monoxide Detector (for ProSeries Control Panels)
SITERWELL Smoke Detector, 10 Year Smoke Alarm with Photoelectric Sensor and Built-in Battery, Fire Detector with Low Battery and Fault Warning for House and Bedroom, UL Listed, GS526A, 2 Packs - Amazon.com
5808W3 - Resideo Honeywell Home Wireless Combo Smoke/Heat Detector