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| FIRST ALERT SCO403 Smoke Alarm & Carbon Monoxide Detector Combo Pack |
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Carbon monoxide detector with electrochemical sensor Smoke alarm with ionization smoke sensor Simple to use silence/test button Low battery warning End-of-life timer Loud 85 decibel alarm Convenient front battery access Includes 2 AA batteries for carbon monoxide detector & 9V for smoke alarm 5-year limited warranty
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