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500+ bought last week
First Alert 10-Year Battery-operated Photoelectric Smoke Detector
Item #5473129 |
Model #1046747
3.9
$44.98
First Alert 10-Year Battery-operated Photoelectric Smoke Detector
3.9
$44.98
Best Price. Guaranteed
Find a lower price on an exact item? We'll match it. Some exclusions apply.
Learn MoreIlluminate your path to safety with the First Alert SM210L 10-Year Sealed Battery Smoke Alarm with Safety Path Light. The SM210L smoke alarm also features First Alert's Precision Detection advanced sensing technology and meets new industry standards. The 10-year battery means no battery replacements for a decade.
Precision Detection technology helps reduce cooking nuisance alarms and provides early warning.
Safety Path Light helps illuminate your path to safety in case of emergency
10-Year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm
End-of-life warning lets you know when it’s time to replace the alarm
Slim profile design is half the depth of a standard alarm
Test/silence button for efficient testing to ensure alarm is working properly
General | |||
|---|---|---|---|
Color/Finish Family | White | Package Quantity | 1 |
Series Name | SM210L | Battery Type | Lithium |
Type | Smoke detector | Light Type | Safety path light |
Power Source | Battery-operated | Alarm Sensor Type | Photoelectric |
Dimensions | |||
|---|---|---|---|
Height (Inches) | 1.19 | Size | Standard |
Length (Inches) | 5.25 | Width (Inches) | 5.25 |
Features | |||
|---|---|---|---|
10-Year Battery | Yes | Interconnection | No |
Battery Back-Up | No | Light | Yes |
Battery Included | Yes | Low-Pitch Tone | No |
Front-Load Battery | No | Sealed Battery | Yes |
Hub Required | No | Voice Alert | No |
Hush Feature | Yes | Voltage | 0 |
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
226 Reviews
70% Recommend this product
Ratings may include incentivized customer reviews.
What Customers Are Saying
The product has a mixed reception, with some customers finding the long battery life and easy installation beneficial, while others reported frequent false alarms and premature battery failure. The overall consensus is that the product's performance and reliability are inconsistent, with a concerning number of customers experiencing issues. Careful consideration is advised before purchasing.
Customer review summary generated by AI, including incentivized reviews.226 Customer Reviews
great product
awesome
November 25, 2025
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Gave solar lights new life
Good Battery Purchase
SSMMNovember 16, 2025
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Disappointed
It sucks. I’ve bought three in the last year and none have lasted more than Six months
Abc123October 22, 2025
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Care
Keeps my family safe and sound
JackieSeptember 27, 2025
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Units fail, battery fine
The battery may last ten years but these units failin 2 or 3 years. Third one being replaced
Old JohnAugust 23, 2025
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Response from FirstAlertProductExpert
Hi, thanks for bringing this to our attention, feel free to contact us at: 1-800-323-9005
to further assist you with this matter. -Cesar
FirstAlertProductExpertAugust 26, 2025
Will They Make a Smoke Alarm That Really Lasts?
We had one just like it that we bought a year ago. It said "10 year battery life". Okay, but one day it just started blaring for no reason so we had to trash it and get a new one.
dolininaAugust 16, 2025
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11 Questions
11 Questions
Betty on May 19, 2023
1
Answer
Lene on October 7, 2021
1
Answer
Anonymous on September 2, 2020
1
Answer
What better alarm. Battery or electric
Anonymous on June 3, 20190
Answers
Alarm is ringing...for a half hour. How can I remove cover to change batteries
Anonymous on May 21, 20190
Answers
the red light blinks about every 6 seconds. is that normal
Anonymous on January 18, 20190
Answers
My smoke alarm is beeping does the alarm need to be replaced
Anonymous on January 4, 20190
Answers
It is going off with 3 beeps then a slight hesitation and then 3 more beeps about every 10 minutes.
Anonymous on December 7, 20180
Answers
Why does my alarm beep occasionally. Is only 1+ yrs. old.
Anonymous on November 29, 20180
Answers
Ours after 3 yrs stopped working. It was continually going off while no other smoke detector/Carbon Dioxide detectors were. How do we do warranty?
luke on July 2, 20180
Answers
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