First Alert BRK Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
First Alert BRK Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
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First Alert BRK Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack

135 ratings
First Alert BRK Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-PackFirst Alert Combination Smoke Carbon Monoxide Alarm Interconnect Hardwire Detector with Battery Backup SMICO100 AC 1 PackFirst Alert SMICO100 AC Interconnect Hardwire Combination Smoke Carbon Monoxide Alarm with Battery Backup 3 PackFirst Alert SMICO100 AC Interconnect Hardwire Combination Smoke Carbon Monoxide Alarm with Battery Backup 6 Pack
Count Per Pack1

Key item features

  • First Alerts Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
  • Through early warning interconnect, when one alarm sounds, all compatible Quick Connect Plug allows for easy installation with no need to rewire
  • Battery backup provides continuous protection during power outages
  • Test/silence button for efficient testing to ensure alarm is working properly

About this item

Product details

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Customer ratings & reviews

4.2 out of 5 stars
stars
135 ratings33 reviews
How item rating is calculated
  1. 5 stars67% (90)
  2. 4 stars13% (17)
  3. 3 stars7% (9)
  4. 2 stars4% (5)
  5. 1 star10% (14)

Reviews summary

Pros

  • : The product provides basic features at an affordable rate.
  • : The units connect directly to existing systems.
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Showing 1-3 of 33 reviews

Sep 19, 2026
Reviewer name: MaryM
Top Reviewer
Item details
Count per pack: 6
Sold and shipped byTop Rated Seller.
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

The system in our new-to-us home died 6 months after moving in. We replaced it with these — so far, so good.

Helpful?4CLRHEVAVYF419258058570
Sep 3, 2026
Reviewer name: Richard
Item details
Count per pack: 3
Sold byTop Rated Seller.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Smoke Detectors Changing

Units are good, they seem to have master the moisture issues i was having with older models.

Helpful?4CLRHEVAVYF419258058570
Oct 12, 2026
Reviewer name: Pam
Item details
Count per pack: 1
Sold byTop Rated Seller.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Fire alarm

I was looking for a match for my fire alarm. This was the exact perfect one.

Helpful?4CLRHEVAVYF419258058570
Current price is $53.13
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