BRK First Alert SMICO100-AC Hardwire Combination Smoke and Carbon Monoxide Alarm White 3 Pack with Battery Backup
First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup - 3 Pack
Hero image 0 of First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup - 3 Pack, 0 of 6
BRK

First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup - 3 Pack

143 ratings
First 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 3 PackFirst Alert SMICO100 AC Interconnect Hardwire Combination Smoke Carbon Monoxide Alarm with Battery Backup 12 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 6 Pack
Count Per Pack3-Out of stock

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

Specs

Smoke & carbon monoxide alarm sensor technology, Ionization SensorBattery life, 10 yearsPower type, BatterySmart tech, NBrand, BRKBatteries incl, Y

About this item

Product details

The SMICO100-AC Interconnect Hardwire 2-in-1 Smoke & CO Alarm with Battery Backup utilizes First Alert's Precision Detection technology and meets new industry standards. Easily install and interconnect multiple alarms together to create an alarm system throughout your home.
  • 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
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

Smoke & carbon monoxide alarm sensor technology

Ionization Sensor

Battery life

10 years

Power type

Battery

Smart tech

N

Warranty

Warranty information

purchased within 30 days following delivery of the item to you

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Warnings

Customer ratings & reviews

4.2 out of 5 stars
stars
143 ratings35 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars66% (95)
  2. 4 stars13% (19)
  3. 3 stars6% (9)
  4. 2 stars3% (5)
  5. 1 star10% (15)

Reviews summary

Pros

  • : The product provides basic features at an affordable rate.
  • : The units connect directly to existing systems.
Generated by AI
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 35 reviews

Feb 8, 2026
Reviewer name: anonymous
Top Reviewer
Item details
Count per pack: 1
Sold and shipped byTop Rated Seller.
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Replacement for already wired detectors

I am keeping this as a backup as my smoke alarms are nearing the end of their life and needing one in a hurry to stop the chirping is a must!! Plus having one on hand eliminates any time period without coverage. These alarms are pre-wired to plug into existing wired systems so installing is easy. Additional wiring is included if yours aren't already connected to electrical system. The box says this is a BRK First Alert product geared towards contractors but as far as I can tell, they just hook into existing ones if your system is already directly wired

Incentivized Review
Helpful?4CLRHEVAVYF419260165384
Jul 2, 2026
Reviewer name: anonymous
Item details
Count per pack: 6
Sold byTop Rated Seller.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

We had to replace our 6 existing fire alarms as they were 8 years old and going wonky. The replacement fire alarms were larger than our prior alarms, but they fit perfectly! They have only been up a month. So far so good.

Helpful?4CLRHEVAVYF419260165384
Jun 4, 2026
Reviewer name: Steven
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

Easy replacement for older model

Great product Had to replace four wired detectors that reached their ten year expiration Only needed to switch out the mounting plate which was very easy The wiring connector fit perfectly

Helpful?4CLRHEVAVYF419260165384
Current price is $153.00
Price when purchased online
Out of stock

How do you want your item?

How do you want your item?
Out of stock