


First Alert 1046848 Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup
Marsoni
M251S
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
Quick Dispatch:
Your First Alert 1046848 Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your First Alert 1046848 Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup ships.
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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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.5 ★★★★★
Based on 1385 reviews
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Product Reviews
★★★★★ 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
★★★★★ 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
★★★★★ 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.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 5, 2026
★★★★★ 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
★★★★★ 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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