First Alert SCO403 Alarm Combination Pack
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Model Number Sco403 Ionization Smoke Sensor Reliably Detects Smoke From Fast-Flaming Fires Electrochemical Sensor Accurately Detects Carbon Monoxide Battery-Operated Alarms Install Easily Without The Aid Of An Electrician Loud 85Db Alarms Sa303 Has 10-Year Limited Warranty & Co400 Has 5-Year Limited Warranty Includes 2 9V Batteries & Mounting Bracket



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