First Alert Smoke and Carbon Monoxide Alarm, 3 pack

First Alert Smoke and Carbon Monoxide Alarm, 3-pack   Features: Wireless Enabled Battery Operated Smoke and Carbon Monoxide Alarm Interconnects to Each Other, When One Sounds They All Sound Voice Alarm Tells Where Potential Danger Exists, Up to 11 Locations Photoelectric Smoke Sensor, Electrochemical Carbon Monoxide Sensor Includes Test/Silence Button, 7-Year Limited Warranty   Smoke and Carbon Monoxide Alarm 3-Pack Combination Smoke and Carbon Monoxide Alarm 3-Pack If you want to build an integrated smoke and carbon monoxide alarm system, but without the cost and hassle of retrofit wiring in your home, these combination smoke and carbon monoxide alarms are an ideal choice. These alarms provide ultimate protection from two deadly threats and they are packed with innovative features that give you precious time in the event of an emergency. And because they are able to wirelessly communicate with other, these alarms can help you create a whole-home safety network. This mode