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Product Information

Version: 2.0.0Built Date: 06/19/2026

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About this product

The First Alert® SMCO100 Battery-Operated 2-in1 Combination Smoke and Carbon Monoxide Alarm provides protection against both threats in a single alarm. Installation of the battery-operated detector is simple - no wiring is required. Add fire and CO protection throughout your home in minutes and help prevent unwanted removal of the battery or alarm using the optional locking features. Easily test the battery-operated combination detector using the single test/silence button to help ensure it is operating properly and silence false alarms. A low-battery warning will tell you when to replace the alarm battery. Detectors themselves should be replaced at least every 10 years. The end-of-life warning will help notify you when it's time to replace. See user's manual for information on how and when to test and replace detectors.
Smart Summary
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First Alert SMCO100: 2-in-1 Smoke and CO Alarm

Stay safe with the First Alert SMCO100, a reliable battery-operated alarm that combines smoke and carbon monoxide detection in one sleek unit. Its compact white design seamlessly blends into any home decor. Equipped with an easy-to-read LED display, this alarm features a loud 85-decibel siren to alert you in case of danger. The battery-operated feature ensures continuous protection even during power outages. With a simple installation process and a test/silence button, peace of mind is just a click away. Protect your home and loved ones with this essential safety device!

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First Alert - SMCO100 Battery-Operated 2-in-1 Smoke and CO Alarm - White
Bestbuy.comBy Bestbuy.com
IN
First Alert

First Alert - SMCO100 Battery-Operated 2-in-1 Smoke and CO Alarm - White

$47.99
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SKU: ef9ee6f5c384883a58443fa5bc64e1ce
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