As is First Alert 2-in-1 Smoke and Carbon Monoxide Alarm
$39.99
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Unboxed as picture! Patented smoke entry system reduces false alarms No low battery chirps or battery replacements Photoelectric smoke sensor and an electrochemical CO sensor Built-in 10-year battery offers continuous power for the life of the detector End-of-life warning to let you know when it’s time to replace
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