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First Alert 10-Year Battery Hardwired (with Battery Back-up) Ionization Interconnected Smoke Detector
Item #5473134 |
Model #1046848
4.7
$39.98
Package Quantity: 1
First Alert 10-Year Battery Hardwired (with Battery Back-up) Ionization Interconnected Smoke Detector
4.7
$39.98
Best Price. Guaranteed
Find a lower price on an exact item? We'll match it. Some exclusions apply.
Learn MoreThe First Alert SMI105-AC Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup uses First Alert's Precision Detection advanced sensing technology and meets new industry standards. Interconnect multiple 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.
Precision Detection technology helps reduce cooking nuisance alarms and provides early warning.
10-Year battery backup provides continuous protection during power outages
Through early warning interconnect, when one alarm sounds, all compatible* alarms will sound
Alarm indicator visually identifies the unit that initiated the alarm
End-of-life warning lets you know when it’s time to replace the alarm
Test/silence button for efficient testing to ensure alarm is working properly
General | |||
|---|---|---|---|
Color/Finish Family | White | Package Quantity | 1 |
Series Name | SMI105-AC Plug | Battery Type | Lithium |
Type | Smoke detector | Package Contents | Easy Adapter Plug |
Power Source | Hardwired | Alarm Sensor Type | Ionization |
Dimensions | |||
|---|---|---|---|
Height (Inches) | 2.25 | Size | Standard |
Length (Inches) | 5.69 | Width (Inches) | 5.69 |
Features | |||
|---|---|---|---|
10-Year Battery | Yes | Interconnection | Yes |
Battery Back-Up | Yes | Light | No |
Battery Included | Yes | Low-Pitch Tone | No |
Front-Load Battery | No | Sealed Battery | Yes |
Hub Required | No | Voice Alert | No |
Hush Feature | Yes | Voltage | 120 |
Compatibility | |||
|---|---|---|---|
Bluetooth Compatibility | No | Works with Apple HomeKit | No |
Smart Compatible | No | Works with iOS | No |
Wi-Fi Compatibility | No | For Use with RVs | No |
Works with Android | No | ||
Warranty | |||
|---|---|---|---|
Warranty | 10-year limited | ||
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | No | Safety Listing | ETL safety listing |
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 46191500 | ||
Check out the Best Selling Smoke Detectors on Lowes.com
Review
509 Reviews
95% Recommend this product
Ratings may include incentivized customer reviews.
What Customers Are Saying
The smoke detectors are generally well-received, with many praising the easy installation and 10-year battery life. Customers highlight the straightforward setup and appreciate the slimmer design that blends seamlessly into the home. The long-lasting power source is a standout feature, eliminating the need for frequent battery replacements. While a few customers reported issues with false alarms or shorter battery life, the overall consensus is that the detectors are a reliable and convenient home safety solution.
Customer review summary generated by AI, including incentivized reviews.509 Customer Reviews
Easy install
Installed very easy. Satisfied with this purchase and hoping the 10 year battery lasts for 10 years!
CindyNovember 27, 2025
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Green Glow
Easy to install with adapter, but at night circles on floor, walls, ceiling glows green around alarm, to bad, seemed like a nice upgrade, but going back to store today, walking down the hall was like going into a disco ! Green light on the walls, floor, ceilings, also in bedrooms, why in the world did they put an internal green light to light up around it like a space ship at night ?
PasoDanNovember 20, 2025
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nothong
Installed easily
TomDNovember 20, 2025
Verified Purchaser
Verified Purchaser
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Not cheap
Easy to install as the wiring connected with same plug. 10 tear battery life
JonesNovember 19, 2025
Verified Purchaser
Verified Purchaser
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Easy to replace
Very easy to do use supplied multi brand connectors
kloneramaNovember 19, 2025
Verified Purchaser
Verified Purchaser
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27 Questions
27 Questions
wrn1 on December 20, 2022
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Hi PasoDan, thank you for reaching out and sharing your experience with us. We'd like to know more about it, our technical support team is availa...