Shop First Alert Smoke Detector Models

Sponsored
$36.38
First Alert Voice Alert Hard-Wired Photoelectric Smoke Detector
Walmart
43
Free shipping
$36.38
First Alert Voice Alert Hard-Wired Photoelectric Smoke Detector
Walmart
43
$16.88
First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
More than 1.2K people from Bing viewed this product in the last 90 days
$16.88
First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
1.2K+ viewed
$56.24
First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
Amazon.com
53
Free shipping
$56.24
First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
Amazon.com
53
$24.88
First Alert SMI110, 10-Year Sealed Battery Smoke Alarm, 1-Pack
Amazon.com
7K+
$24.88
First Alert SMI110, 10-Year Sealed Battery Smoke Alarm, 1-Pack
Amazon.com
7K+
$32.06
First Alert Hardwired Heat Alarm With Battery Backup, BRK Brands HD6135FB
Amazon.com
1
$32.06
First Alert Hardwired Heat Alarm With Battery Backup, BRK Brands HD6135FB
Amazon.com
1
$57.38
First Alert SC9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm And Carbon Monoxide Combo Alarm (Upgraded To SMICO100-AC)
Electric Bargain Store
1
$57.38
First Alert SC9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm And Carbon Monoxide Combo Alarm (Upgraded To SMICO100-AC)
Electric Bargain Store
1
$32.66
First Alert Smoke Detector Hard-Wired W/Battery Back-Up Ionization White 1046834
DkHardware.com
10% Off*
$32.66
First Alert Smoke Detector Hard-Wired W/Battery Back-Up Ionization White 1046834
DkHardware.com
10% Off*
$12.51
BRK SMI100, Smoke Alarm, Detects Flaming Fires, Ionization Sensor, Battery Operated, 9V Carbon Zinc Battery | 1000 Bulbs
1000Bulbs.com
462
$12.51
BRK SMI100, Smoke Alarm, Detects Flaming Fires, Ionization Sensor, Battery Operated, 9V Carbon Zinc Battery | 1000 Bulbs
1000Bulbs.com
462
$17.01
$19.99
First Alert Hardwired Ionization Smoke Alarm With Battery Backup - 5194782
Acme Tools
563
14% off
$17.01
$19.99
First Alert Hardwired Ionization Smoke Alarm With Battery Backup - 5194782
Acme Tools
563
$16.99
Sunco First Alert BRK Hardwired Ionization Smoke Alarm
sunco
Cost-Effective · Easily Replaceable · Easy installation · First Alert · Perfect fit
$16.99
Sunco First Alert BRK Hardwired Ionization Smoke Alarm
sunco
Cost-Effective · Easily Replaceable · Easy installation · First Alert · Perfect fit
$74.97
Firex 4-Pack Hardwired Smoke Detector With Ionization Sensor
Home Depot
In store
Free shipping
More than 1.1K people from Bing viewed this product in the last 90 days
Curbside
$74.97
Firex 4-Pack Hardwired Smoke Detector With Ionization Sensor
Home Depot
1.1K+ viewed
$43.99
First Alert Slim Photoelectric Smoke Alarm With 10-Year Battery - 1039856
Acme Tools
36
$43.99
First Alert Slim Photoelectric Smoke Alarm With 10-Year Battery - 1039856
Acme Tools
36
$39.99
First Alert Z-Wave Plus Smoke/CO Alarm (2Nd Gen) (Works With Ring Alarm Security System) In White | Smart Home Security
Ring
30
$39.99
First Alert Z-Wave Plus Smoke/CO Alarm (2Nd Gen) (Works With Ring Alarm Security System) In White | Smart Home Security
Ring
30
$58.28
First Alert SC7010B 120V AC/DC Hardwired With 2 AA Batteries Backup Photoelectric Smoke Alarm And Carbon Monoxide Combo Alarm (Upgraded To
Electric Bargain Store
Battery · Cost-Effective · Easy installation · First Alert
$58.28
First Alert SC7010B 120V AC/DC Hardwired With 2 AA Batteries Backup Photoelectric Smoke Alarm And Carbon Monoxide Combo Alarm (Upgraded To
Electric Bargain Store
Battery · Cost-Effective · Easy installation · First Alert
$45.29
First Alert Smoke Detector Interconnect Hard-Wired W/Battery Back-Up Ionization White 1046848
DkHardware.com
10% Off*
$45.29
First Alert Smoke Detector Interconnect Hard-Wired W/Battery Back-Up Ionization White 1046848
DkHardware.com
10% Off*
$24.97
Firex Hardwired Smoke Detector With Ionization Sensor And Adapters
Home Depot
In store
2K+
Free shipping
Curbside
$24.97
Firex Hardwired Smoke Detector With Ionization Sensor And Adapters
Home Depot
2K+
$36.39
First Alert 1046747, Smoke Alarm, Detects Smoldering Fires, Photoelectric Sensor, Battery Operated, Sealed Lithium 10 Year Battery | 1000 Bulbs
1000Bulbs.com
4K+
$36.39
First Alert 1046747, Smoke Alarm, Detects Smoldering Fires, Photoelectric Sensor, Battery Operated, Sealed Lithium 10 Year Battery | 1000 Bulbs
1000Bulbs.com
4K+
$57.99
First Alert Interconnected Wireless Smoke Alarm With Voice Location Battery Operated - 1039826
Acme Tools
Battery · First Alert · Smoke Detector
$57.99
First Alert Interconnected Wireless Smoke Alarm With Voice Location Battery Operated - 1039826
Acme Tools
Battery · First Alert · Smoke Detector
$43.64
BRK 1046890, Smoke And Carbon Monoxide Alarm, Detects Fast Flaming Fires And/Or CO Hazard, Ionization And Electrochemical Sensors, Battery Operated,
1000Bulbs.com
30-day returns (most items)
$43.64
BRK 1046890, Smoke And Carbon Monoxide Alarm, Detects Fast Flaming Fires And/Or CO Hazard, Ionization And Electrochemical Sensors, Battery Operated,
1000Bulbs.com
30-day returns
$49.84
First Alert Smoke Detector Wireless Interconnect Battery-Powered Photoelectric 1048448
DkHardware.com
10% Off*
$49.84
First Alert Smoke Detector Wireless Interconnect Battery-Powered Photoelectric 1048448
DkHardware.com
10% Off*
$60.57
First Alert SCO2B Smoke & Carbon Monoxide Detector
ProSupplyDirect 2
1K+
$60.57
First Alert SCO2B Smoke & Carbon Monoxide Detector
ProSupplyDirect 2
1K+
$57.99
Sunco 1-Pack First Alert BRK SMICO100-AC Interconnect Hardwire Smoke And Carbon Monoxide Alarm 1-Pack
sunco
30-day returns (most items)
$57.99
Sunco 1-Pack First Alert BRK SMICO100-AC Interconnect Hardwire Smoke And Carbon Monoxide Alarm 1-Pack
sunco
30-day returns
$84.49
First Alert 10 Year Back Up Ionization Smoke And Carbon Monoxide Detector - N/A - AC
Bed Bath & Beyond
$84.49
First Alert 10 Year Back Up Ionization Smoke And Carbon Monoxide Detector - N/A - AC
Bed Bath & Beyond
$31.99
First Alert Battery-Powered Photoelectric Smoke/Fire Detector 1 Pk
Ace Hardware
$31.99
First Alert Battery-Powered Photoelectric Smoke/Fire Detector 1 Pk
Ace Hardware
$35.70
First Alert HD6135FB Smoke Detector
ProSupplyDirect 2
1
$35.70
First Alert HD6135FB Smoke Detector
ProSupplyDirect 2
1
$135.55
First Alert 7020BSL Smoke Detector
ProSupplyDirect 2
280
$135.55
First Alert 7020BSL Smoke Detector
ProSupplyDirect 2
280
$55.49
First Alert Interconnect Ionization Smoke Detector - N/A - AC
Bed Bath & Beyond
$55.49
First Alert Interconnect Ionization Smoke Detector - N/A - AC
Bed Bath & Beyond
$54.99
First Alert 10 Year With Path Light Photoelectric Smoke Detector - N/A - Battery
Bed Bath & Beyond
$54.99
First Alert 10 Year With Path Light Photoelectric Smoke Detector - N/A - Battery
Bed Bath & Beyond
$35.75
First Alert Hardwired 120V Electrochemical/Ionization Carbon Monoxide And Smoke Alarm
iverybers.com
Free shipping
$35.75
First Alert Hardwired 120V Electrochemical/Ionization Carbon Monoxide And Smoke Alarm
iverybers.com
Free shipping
$42.50
First Alert Hardwired 120V Ionization Smoke Alarm (6-Pack)
iverybers.com
Free shipping
$42.50
First Alert Hardwired 120V Ionization Smoke Alarm (6-Pack)
iverybers.com
Free shipping
$22.99
First Alert 10 Year With Path Light Battery-Powered Photoelectric Smoke Alarm
eBay.com
Free shipping
$22.99
First Alert 10 Year With Path Light Battery-Powered Photoelectric Smoke Alarm
eBay.com
Free shipping
$50.63
First Alert 2-In-1 10-Year Battery Photoelectric Smoke & Carbon Monoxide Alarm 1046796
SIM Supply
21
$50.63
First Alert 2-In-1 10-Year Battery Photoelectric Smoke & Carbon Monoxide Alarm 1046796
SIM Supply
21
$32.99
First Alert Hard-Wired W/Battery Back-Up Ionization Heat Alarm 1 Pk
Ace Hardware
1
$32.99
First Alert Hard-Wired W/Battery Back-Up Ionization Heat Alarm 1 Pk
Ace Hardware
1
$29.95
First Alert 10 Year Battery Photoelectric Smoke Alarm Safety Path
eBay
Free shipping
$29.95
First Alert 10 Year Battery Photoelectric Smoke Alarm Safety Path
eBay
Free shipping
$42.92
First Alert Slim Smoke Alarm - Wal-Rich Corporation
Getpipe.com
$42.92
First Alert Slim Smoke Alarm - Wal-Rich Corporation
Getpipe.com
$17.10
First Alert Battery Powered Ionization Smoke Alarm 1046827
SIM Supply
4
$17.10
First Alert Battery Powered Ionization Smoke Alarm 1046827
SIM Supply
4
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    Shop First Alert Smoke Detector Models

    Sponsored
    $36.38
    First Alert Voice Alert Hard-Wired Photoelectric Smoke Detector
    Walmart
    43
    Free shipping
    $36.38
    First Alert Voice Alert Hard-Wired Photoelectric Smoke Detector
    Walmart
    43
    $16.88
    First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
    Electric Bargain Store
    More than 1.2K people from Bing viewed this product in the last 90 days
    $16.88
    First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
    Electric Bargain Store
    1.2K+ viewed
    $56.24
    First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
    Amazon.com
    53
    Free shipping
    $56.24
    First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
    Amazon.com
    53
    $24.88
    First Alert SMI110, 10-Year Sealed Battery Smoke Alarm, 1-Pack
    Amazon.com
    7K+
    More than 1.1K people from Bing viewed this product in the last 90 days
    $24.88
    First Alert SMI110, 10-Year Sealed Battery Smoke Alarm, 1-Pack
    Amazon.com
    7K+
    $32.06
    First Alert Hardwired Heat Alarm With Battery Backup, BRK Brands HD6135FB
    Amazon.com
    1
    $32.06
    First Alert Hardwired Heat Alarm With Battery Backup, BRK Brands HD6135FB
    Amazon.com
    1
    $57.38
    First Alert SC9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm And Carbon Monoxide Combo Alarm (Upgraded To SMICO100-AC)
    Electric Bargain Store
    1
    More than 640 people from Bing viewed this product in the last 90 days
    $57.38
    First Alert SC9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm And Carbon Monoxide Combo Alarm (Upgraded To SMICO100-AC)
    Electric Bargain Store
    1
    $12.51
    BRK SMI100, Smoke Alarm, Detects Flaming Fires, Ionization Sensor, Battery Operated, 9V Carbon Zinc Battery | 1000 Bulbs
    1000Bulbs.com
    462
    30-day returns (most items)
    $12.51
    BRK SMI100, Smoke Alarm, Detects Flaming Fires, Ionization Sensor, Battery Operated, 9V Carbon Zinc Battery | 1000 Bulbs
    1000Bulbs.com
    462
    $32.66
    First Alert Smoke Detector Hard-Wired W/Battery Back-Up Ionization White 1046834
    DkHardware.com
    10% Off*
    $32.66
    First Alert Smoke Detector Hard-Wired W/Battery Back-Up Ionization White 1046834
    DkHardware.com
    10% Off*
    $17.01
    $19.99
    First Alert Hardwired Ionization Smoke Alarm With Battery Backup - 5194782
    Acme Tools
    563
    14% off
    $17.01
    $19.99
    First Alert Hardwired Ionization Smoke Alarm With Battery Backup - 5194782
    Acme Tools
    563
    $16.99
    Sunco First Alert BRK Hardwired Ionization Smoke Alarm
    sunco
    Cost-Effective · Easily Replaceable · Easy installation · First Alert · Perfect fit
    $16.99
    Sunco First Alert BRK Hardwired Ionization Smoke Alarm
    sunco
    Cost-Effective · Easily Replaceable · Easy installation · First Alert · Perfect fit
    $74.97
    Firex 4-Pack Hardwired Smoke Detector With Ionization Sensor
    Home Depot
    In store
    3K+
    Free shipping
    More than 1.1K people from Bing viewed this product in the last 90 days
    Curbside
    $74.97
    Firex 4-Pack Hardwired Smoke Detector With Ionization Sensor
    Home Depot
    3K+
    $43.99
    First Alert Slim Photoelectric Smoke Alarm With 10-Year Battery - 1039856
    Acme Tools
    36
    $43.99
    First Alert Slim Photoelectric Smoke Alarm With 10-Year Battery - 1039856
    Acme Tools
    36
    $39.99
    First Alert Z-Wave Plus Smoke/CO Alarm (2Nd Gen) (Works With Ring Alarm Security System) In White | Smart Home Security
    Ring
    30
    $39.99
    First Alert Z-Wave Plus Smoke/CO Alarm (2Nd Gen) (Works With Ring Alarm Security System) In White | Smart Home Security
    Ring
    30
    $58.28
    First Alert SC7010B 120V AC/DC Hardwired With 2 AA Batteries Backup Photoelectric Smoke Alarm And Carbon Monoxide Combo Alarm (Upgraded To
    Electric Bargain Store
    Battery · Cost-Effective · Easy installation · First Alert
    $58.28
    First Alert SC7010B 120V AC/DC Hardwired With 2 AA Batteries Backup Photoelectric Smoke Alarm And Carbon Monoxide Combo Alarm (Upgraded To
    Electric Bargain Store
    Battery · Cost-Effective · Easy installation · First Alert
    $45.29
    First Alert Smoke Detector Interconnect Hard-Wired W/Battery Back-Up Ionization White 1046848
    DkHardware.com
    10% Off*
    $45.29
    First Alert Smoke Detector Interconnect Hard-Wired W/Battery Back-Up Ionization White 1046848
    DkHardware.com
    10% Off*
    $24.97
    Firex Hardwired Smoke Detector With Ionization Sensor And Adapters
    Home Depot
    In store
    2K+
    Free shipping
    Curbside
    $24.97
    Firex Hardwired Smoke Detector With Ionization Sensor And Adapters
    Home Depot
    2K+
    $36.39
    First Alert 1046747, Smoke Alarm, Detects Smoldering Fires, Photoelectric Sensor, Battery Operated, Sealed Lithium 10 Year Battery | 1000 Bulbs
    1000Bulbs.com
    4K+
    30-day returns (most items)
    $36.39
    First Alert 1046747, Smoke Alarm, Detects Smoldering Fires, Photoelectric Sensor, Battery Operated, Sealed Lithium 10 Year Battery | 1000 Bulbs
    1000Bulbs.com
    4K+
    $57.99
    First Alert Interconnected Wireless Smoke Alarm With Voice Location Battery Operated - 1039826
    Acme Tools
    Battery · First Alert · Smoke Detector
    $57.99
    First Alert Interconnected Wireless Smoke Alarm With Voice Location Battery Operated - 1039826
    Acme Tools
    Battery · First Alert · Smoke Detector

    • 5 Best Smoke Detectors 2025 | There's One Clear Winner Now

      https://reviews.chicagotribune.com › smoke_detectors
      SponsoredWe Did The Research. Read Our In-Depth Guide for the Best Smoke Detectors of 2025. We Compared First Alert vs X-Sense vs Nest. Read the Expert Reviews

      View Our Experts #1 Pick · Prices Reviews & Ratings · There's One Clear Winner

      Brands: First Alert, Kidde, X-Sense, Nest

      5/5 (780 reviews)