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First Alert 1046848 Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup

Marsoni M251S
Sale price$39.99
Pay 4 payments of $10.00 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
First Alert 1046848 Interconnect Hardwire Smoke Alarm with 10-Year Battery BackupWorks with SC5 Smart Alarm Interconnect multiple First Alert SMI105 AC Smoke Alarms together to help provide an early warning throughout your whole home and have peace of mind knowing the 10 year battery backup provides continuous protection in the event of a power outage. First Alert's Precision Detection advanced sensing technology complies with the latest industry standards to reduce cooking nuisance alarms and provides early warning in the event
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.5 ★★★★★
Based on 1385 reviews
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GENjaminI51
Fort Morgan, US
★★★★★ 5
Fits my 2022 11th gen Honda Civic
Fits my 2022 11th gen Honda Civic perfectly. Much cheaper than the OEM and works just fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
F
Verified Purchase
Fernando M Villalobos
Boise, US
★★★★★ 5
easy replacement
Very good quality, perfect size and super easy replacement for my Honda Accord 2023. It is a really good valye for money. 100% recommended
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 14, 2025
C
Verified Purchase
CaptTOMJ404
Alexandria, US
★★★★★ 5
Got it when they couldn't
In stock and fast shipping was the selling point. My local auto parts stores didn't have this in stock anywhere. I got it in two days and cheaper than they could get it to me. Fits great and works like it should. I'm on top of my maintenance for all my vehicles, so it will get changed on time. Life span should not be an issue.
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Reviewed in the United States on March 5, 2026
L
Verified Purchase
Linda L
Houston, US
★★★★★ 5
as good as the original.
easy to install and works as good as the original.
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Reviewed in the United States on July 13, 2025
W
Verified Purchase
Watermediaartist
Cuba, US
★★★★★ 5
Don’t over pay for auto filters
Great filter for reasonable price. Great fit in vehicle
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Reviewed in the United States on February 12, 2026

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