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First Alert Smoke and Carbon Monoxide Alarm, 3-pack
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Features:
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Wireless Enabled Battery Operated Smoke and Carbon Monoxide Alarm
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Interconnects to Each Other, When One Sounds They All Sound
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Voice Alarm Tells Where Potential Danger Exists, Up to 11 Locations
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Includes Test/Silence Button
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Photoelectric Smoke Sensor, Electrochemical Carbon Monoxide Sensor
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Power SourceBattery