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

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

Marsoni

M251S

$39.99

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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Oooooo these are so nice and soft and so warm! I am a nurse and work in an old hospital that is getting remodeled and there have been days we haven’t had heat and I have been very happy that I purchased these. My scrubs glide very nicely over these and don’t add any bulk. Definitely worth every penny! The fit is spot on and they wash up really well.

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Reviewed in the United States on December 12, 2025

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Jay Bay

West Palm Beach, US

★★★★★ 4

Warm and Comfortable for Everyday Wear

Size: XX-Large, Color: Light Grey

This thermal set is really comfortable and does a good job keeping you warm in colder weather. The fleece lining is soft and cozy without feeling too heavy, and it works well as a base layer under regular clothes. The fit is true to size with a nice amount of stretch, so it is easy to move around in and does not feel restrictive. It is also lightweight enough to wear throughout the day. The only reason for 4 stars instead of 5 is that it could be a little thicker for extremely cold temperatures, but it still works well for most everyday use. Overall, this is a solid and comfortable thermal set that is great for layering and staying warm. I would recommend it.

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Reviewed in the United States on March 27, 2026

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Lak2968

Waukegan, US

★★★★★ 5

Warm Thermals!

Size: Medium, Color: Black

Very comfortable and kept me warm in really cold conditions. Very soft and easy to wear.

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Reviewed in the United States on February 26, 2026

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