


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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4.8 ★★★★★
Based on 676 reviews
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Product Reviews
★★★★★ 5
Just as described
Color: Blue+red
Just as described. Quick shipping
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Reviewed in the United States on April 4, 2026
★★★★★ 3
Leaks
Color: Blue+red
Water leaks out of the button you press to change out the head so we will be sending back. Other than that it would be perfect, I’m sure it’s just a fluke thing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 5
Value purchase
This item arrived well packaged, intact with timely delivery. I am satisfied with the product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 5, 2022
★★★★★ 4
works
i feel like the hole isn’t as small as before so less pressure now
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 11, 2024
★★★★★ 5
Effective
Works well
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Reviewed in the United States on February 26, 2023