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First Alert Smoke Alarm and Carbon Monoxide Detector

(View all from First Alert)

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First Alert Smoke Alarm and Carbon Monoxide Detector


  • Includes 2 AA batteries for carbon monoxide detector and 9v for smoke alarm
  • Smoke alarm and carbon monoxide detector
  • Carbon monoxide detector with electro-chemical sensor
  • Smoke alarm with ionization smoke sensor
  • Simple to use silence and test button
  • End of life timer
  • Loud 85 decibel alarm
  • Low battery warning
  • Manufacturer provides 5 years warranty


  • Overall: 6.9" W
  • Overall Product Weight: 0.95lbs

First Alert Smoke Alarm and Carbon Monoxide Detector

Weights & Dimensions

  • Overall: 6.9" W
  • Overall dimensions: 3.5" H x 6.9" W x 9.75" D, 43.99 lbs
  • Overall Product Weight: 0.95lbs


Product Type: Smoke Detector; Carbon Monoxide DetectorOrientation: Wall/Ceiling Mounted
Power Source(s): 9V BatteryGlobal Product Type: Smoke/Co Detectors-Smoke/Carbon Monoxide Detector
Mounting: WallCountry of Manufacture: China

About the Manufacturer

First Alert is the most recognized and trusted brand in home safety and security products, helping protect what matters most to you and your family. First Alert is a leading manufacturer of smoke alarms, carbon monoxide detectors, fire extinguishing products, safes, security cameras, fencing, doors, window guards, and many other home safety products. Please consider them a resource for the latest recommendations in home safety.

First Alert Smoke Alarm and Carbon Monoxide Detector

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Still have questions about this product? We're here to help

When you buy a First Alert Smoke Alarm and Carbon Monoxide Detector online from Wayfair Supply, we make it as easy as possible for you to find out when your product will be delivered. You can check on a delivery estimate for the First Alert Part #: SCO403 here. If you have any questions about your purchase or any other Smoke & CO Detectors product for sale our customer service representatives are available to help.Whether you just want to buy a First Alert Smoke Alarm and Carbon Monoxide Detector or shop for your entire business, Wayfair Supply has everything you need.
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Average Overall Rating
(based on 2 reviews)

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As expected.

from Minneapolis, MN – Verified Buyer

Product appears to be as expected. Works in test phase, hope it works same for actual detection. Pros: Easy battery install.

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great product that matches description

from Grosse Pointe Woods, MI – Verified Buyer

I live in a one story brick ranch and put this in the hallway to the bedrooms for peace of mind.

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Smoke Alarm and Carbon Monoxide Detector is also sometimes listed under the following manufacturer numbers: SCO403