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$49.46
$64.99
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup, SMICO100-AC, 1-Pack
Amazon.com
Free shipping
23% off
$49.46
$64.99
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup, SMICO100-AC, 1-Pack
Amazon.com
Free shipping
$52.00
Smoke And Carbon Monoxide Detector - 9V Battery - ULINE
Uline
$52.00
Smoke And Carbon Monoxide Detector - 9V Battery - ULINE
Uline
$58.49
First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
Amazon.com
Free shipping
$58.49
First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
Amazon.com
Free shipping
$49.97
$60.92
Kidde Smoke And Carbon Monoxide Detector, AA Battery Powered With LED Status Lights, 85 Db Alarm, 5 Inches, 30CUDR, 1 Pack
Amazon.com
Free shipping
17% off
$49.97
$60.92
Kidde Smoke And Carbon Monoxide Detector, AA Battery Powered With LED Status Lights, 85 Db Alarm, 5 Inches, 30CUDR, 1 Pack
Amazon.com
Free shipping
$23.39
$25.99
Kesymo 1Pack Upgraded Interlinked Smoke Carbon Monoxide Detector, Battery Powered&Wireless Interconnected Smoke And CO Alarm, Transmission Range Of
Amazon.com
10% off
$23.39
$25.99
Kesymo 1Pack Upgraded Interlinked Smoke Carbon Monoxide Detector, Battery Powered&Wireless Interconnected Smoke And CO Alarm, Transmission Range Of
Amazon.com
$41.99
Yfwsrecinoe 2 Pack Upgraded Combination Smoke And Carbon Monoxide Alarm Detector, Dual Sensor Smoke Alarm&Carbon Monoxide Detector (Includes Battery)
Amazon.com
Free shipping
$41.99
Yfwsrecinoe 2 Pack Upgraded Combination Smoke And Carbon Monoxide Alarm Detector, Dual Sensor Smoke Alarm&Carbon Monoxide Detector (Includes Battery)
Amazon.com
Free shipping
$59.99
BRK First Alert - PRC710B 10-Year Combination Carbon Monoxide And Photoelectric Smoke Detector, 1 - Pack
WholesaleHome
$59.99
BRK First Alert - PRC710B 10-Year Combination Carbon Monoxide And Photoelectric Smoke Detector, 1 - Pack
WholesaleHome
$55.02
Universal Security Instruments Inc Combination 2-In-1 Smoke And Fire Alarm Detector Hardwired 10-Year Sealed Battery Backup Multi-Criteria D AMI1061SB
DkHardware.com
$55.02
Universal Security Instruments Inc Combination 2-In-1 Smoke And Fire Alarm Detector Hardwired 10-Year Sealed Battery Backup Multi-Criteria D AMI1061SB
DkHardware.com
$51.84
First Alert Smoke And Carbon Monoxide Detector 10 Year Battery-Powered Ionization White 1046888
DkHardware.com
$51.84
First Alert Smoke And Carbon Monoxide Detector 10 Year Battery-Powered Ionization White 1046888
DkHardware.com
$60.00
Kidde Smoke And Carbon Monoxide Detector, 10-Year Battery Powered, LED Status Lights, 85 Db Alarm, 5-Inches, 30CUD10, 1 Pack
Amazon.com
Free shipping
$60.00
Kidde Smoke And Carbon Monoxide Detector, 10-Year Battery Powered, LED Status Lights, 85 Db Alarm, 5-Inches, 30CUD10, 1 Pack
Amazon.com
Free shipping
$54.12
$64.99
New 2025 First Alert SMCO410 Z-Wave Battery-Powered Smoke Detector & Carbon Monoxide Alarm, Works With Ring Alarm Base Station, Single Pack, White
Amazon.com
Free shipping
16% off
$54.12
$64.99
New 2025 First Alert SMCO410 Z-Wave Battery-Powered Smoke Detector & Carbon Monoxide Alarm, Works With Ring Alarm Base Station, Single Pack, White
Amazon.com
Free shipping
$139.99
BRK SMCO110LED-AC Smoke & CO Alarm - Hardwired With LED Indicator, Battery Backup, And Dual Sensors, 1 Pack
WholesaleHome
$139.99
BRK SMCO110LED-AC Smoke & CO Alarm - Hardwired With LED Indicator, Battery Backup, And Dual Sensors, 1 Pack
WholesaleHome
$47.51
First Alert BRK Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector With Test & Silence Button, SMICO100, 1-Pack
Amazon.com
Free shipping
$47.51
First Alert BRK Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector With Test & Silence Button, SMICO100, 1-Pack
Amazon.com
Free shipping
$92.52
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 2 Pack
Amazon.com
Free shipping
$92.52
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 2 Pack
Amazon.com
Free shipping
$41.98
$44.99
First Alert SM300-AC, Interconnect Hardwire Dual Sensor Smoke Alarm With Battery Backup, 1-Pack
Amazon.com
Free shipping
$41.98
$44.99
First Alert SM300-AC, Interconnect Hardwire Dual Sensor Smoke Alarm With Battery Backup, 1-Pack
Amazon.com
Free shipping
$57.99
Sunco First Alert BRK SMICO100-AC Interconnect Hardwire Smoke And Carbon Monoxide Alarm
Sunco
30-day returns (most items)
$57.99
Sunco First Alert BRK SMICO100-AC Interconnect Hardwire Smoke And Carbon Monoxide Alarm
Sunco
30-day returns
$39.98
$44.99
First Alert Combination Smoke & Carbon Monoxide Alarm, Battery-Operated Detector With Slim Profile Design, SMCO200, 1-Pack
Amazon.com
Free shipping
11% off
$39.98
$44.99
First Alert Combination Smoke & Carbon Monoxide Alarm, Battery-Operated Detector With Slim Profile Design, SMCO200, 1-Pack
Amazon.com
Free shipping
$57.99
First Alert 10 Year Ionization Smoke And Carbon Monoxide Detector - Battery
Bed Bath & Beyond
$57.99
First Alert 10 Year Ionization Smoke And Carbon Monoxide Detector - Battery
Bed Bath & Beyond
$59.99
First Alert BRK SMICO100-AC Hardwire 2-In-1 Smoke & CO Alarm With Battery Backup - 5050063
Acme Tools
5
$59.99
First Alert BRK SMICO100-AC Hardwire 2-In-1 Smoke & CO Alarm With Battery Backup - 5050063
Acme Tools
5
$39.49
$54.94
First Alert SMCO210 Sealed 10-Year Battery Combo Smoke And Carbon Monoxide Detector With Slim Profile Design
Amazon.com
Free shipping
28% off
$39.49
$54.94
First Alert SMCO210 Sealed 10-Year Battery Combo Smoke And Carbon Monoxide Detector With Slim Profile Design
Amazon.com
Free shipping
$45.99
First Alert SM210 Battery Combination Smoke & CO400 CO Alarm Value Pack - 5050096
Acme Tools
15
$45.99
First Alert SM210 Battery Combination Smoke & CO400 CO Alarm Value Pack - 5050096
Acme Tools
15
$43.87
$49.85
BRK Battery-Powered Ionization Smoke And Carbon Monoxide Detector
Bed Bath & Beyond
11% off
$43.87
$49.85
BRK Battery-Powered Ionization Smoke And Carbon Monoxide Detector
Bed Bath & Beyond
$84.49
First Alert 10 Year Back Up Ionization Smoke And Carbon Monoxide Detector - AC
Bed Bath & Beyond
$84.49
First Alert 10 Year Back Up Ionization Smoke And Carbon Monoxide Detector - AC
Bed Bath & Beyond
$110.00
$129.99
First Alert SC5 Battery Smart Smoke & Carbon Monoxide Alarm, SMCO600NV, 1-Pack
Amazon.com
Free shipping
15% off
$110.00
$129.99
First Alert SC5 Battery Smart Smoke & Carbon Monoxide Alarm, SMCO600NV, 1-Pack
Amazon.com
Free shipping
$74.98
Kidde Smart Smoke And Carbon Monoxide Detector, Ring App Enabled For Real-Time Notifications, Hardwired Alarm, AA Backup Battery
Amazon.com
Free shipping
$74.98
Kidde Smart Smoke And Carbon Monoxide Detector, Ring App Enabled For Real-Time Notifications, Hardwired Alarm, AA Backup Battery
Amazon.com
Free shipping
$45.14
BRK First Alert SMICO110 Interconnect Hardwire Combination Smoke And Carbon Monoxide Alarm With Battery Backup BY BUYRITE ELECTRIC
BuyRite Electric
14-day returns (most items)
$45.14
BRK First Alert SMICO110 Interconnect Hardwire Combination Smoke And Carbon Monoxide Alarm With Battery Backup BY BUYRITE ELECTRIC
BuyRite Electric
14-day returns
$37.00
First Alert BRK SC7010BV Hardwired Talking Photoelectric Smoke And Carbon Monoxide (CO) Detector - White - 1 Each
Instacart
$37.00
First Alert BRK SC7010BV Hardwired Talking Photoelectric Smoke And Carbon Monoxide (CO) Detector - White - 1 Each
Instacart
$84.98
Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack
Amazon.com
Free shipping
$84.98
Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack
Amazon.com
Free shipping
$192.92
Kidde Fire Safety Smoke And Carbon Monoxide Alarm 85 Db Decibel Rating, Aa Battery Not Included, Indicating Light 21007450 - 61972857
Penn Tool Co
Battery · Cost-Effective · Easy to install · Kidde · Smoke Detector
$192.92
Kidde Fire Safety Smoke And Carbon Monoxide Alarm 85 Db Decibel Rating, Aa Battery Not Included, Indicating Light 21007450 - 61972857
Penn Tool Co
Battery · Cost-Effective · Easy to install · Kidde · Smoke Detector
$106.99
First Alert SC-9120B Hardwired Smoke And Carbon Monoxide Alarm With Battery Backup 2 Pack
Amazon.com
Free shipping
$106.99
First Alert SC-9120B Hardwired Smoke And Carbon Monoxide Alarm With Battery Backup 2 Pack
Amazon.com
Free shipping
$39.04
BRK First Alert SMCO210 (1046802) 10-Year Battery 2-In-1 Smoke & CO Alarm With Slim Profile Design
Electric Bargain Store
$39.04
BRK First Alert SMCO210 (1046802) 10-Year Battery 2-In-1 Smoke & CO Alarm With Slim Profile Design
Electric Bargain Store
$71.95
Kidde Cuacfex-V Hardwired Combination Smoke And Carbon Monoxide Detector
Lite Store USA
$71.95
Kidde Cuacfex-V Hardwired Combination Smoke And Carbon Monoxide Detector
Lite Store USA
$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
$51.75
BRK First Alert SMCO210V (1046808) 10-Year Battery-Operated 2-In-1 Smoke And CO Alarm With Voice And Location Alerts
Electric Bargain Store
$51.75
BRK First Alert SMCO210V (1046808) 10-Year Battery-Operated 2-In-1 Smoke And CO Alarm With Voice And Location Alerts
Electric Bargain Store
$61.50
First Alert Smoke Alarm, 10-Year Sealed Battery Dual Sensor Detector With Test & Silence Button, SM310, 1-Pack
Amazon.com
Free shipping
$61.50
First Alert Smoke Alarm, 10-Year Sealed Battery Dual Sensor Detector With Test & Silence Button, SM310, 1-Pack
Amazon.com
Free shipping
$59.18
Kidde KN-COSM-XTR-B (900-0216) (KN-COSM-XTR-BA) (21008700) Intelligent Alarm, Battery Operated Combination Carbon Monoxide, Fire And Smoke Alarm
Electric Bargain Store
Battery · Cost-Effective · Easy to install · Kidde · Smoke Detector
$59.18
Kidde KN-COSM-XTR-B (900-0216) (KN-COSM-XTR-BA) (21008700) Intelligent Alarm, Battery Operated Combination Carbon Monoxide, Fire And Smoke Alarm
Electric Bargain Store
Battery · Cost-Effective · Easy to install · Kidde · Smoke Detector
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    Shop combination smoke detector

    Sponsored
    About our ads
    $49.46
    $64.99
    First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup, SMICO100-AC, 1-Pack
    Amazon.com
    Free shipping
    23% off
    $49.46
    $64.99
    First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector With Battery Backup, SMICO100-AC, 1-Pack
    Amazon.com
    Free shipping
    $52.00
    Smoke And Carbon Monoxide Detector - 9V Battery - ULINE
    Uline
    $52.00
    Smoke And Carbon Monoxide Detector - 9V Battery - ULINE
    Uline
    $58.49
    First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
    Amazon.com
    Free shipping
    $58.49
    First Alert BRK SC-9120B Hardwired Smoke And Carbon Monoxide (CO) Detector With Battery Backup
    Amazon.com
    Free shipping
    $49.97
    $60.92
    Kidde Smoke And Carbon Monoxide Detector, AA Battery Powered With LED Status Lights, 85 Db Alarm, 5 Inches, 30CUDR, 1 Pack
    Amazon.com
    Free shipping
    17% off
    $49.97
    $60.92
    Kidde Smoke And Carbon Monoxide Detector, AA Battery Powered With LED Status Lights, 85 Db Alarm, 5 Inches, 30CUDR, 1 Pack
    Amazon.com
    Free shipping
    $23.39
    $25.99
    Kesymo 1Pack Upgraded Interlinked Smoke Carbon Monoxide Detector, Battery Powered&Wireless Interconnected Smoke And CO Alarm, Transmission Range Of
    Amazon.com
    10% off
    $23.39
    $25.99
    Kesymo 1Pack Upgraded Interlinked Smoke Carbon Monoxide Detector, Battery Powered&Wireless Interconnected Smoke And CO Alarm, Transmission Range Of
    Amazon.com
    $41.99
    Yfwsrecinoe 2 Pack Upgraded Combination Smoke And Carbon Monoxide Alarm Detector, Dual Sensor Smoke Alarm&Carbon Monoxide Detector (Includes Battery)
    Amazon.com
    Free shipping
    $41.99
    Yfwsrecinoe 2 Pack Upgraded Combination Smoke And Carbon Monoxide Alarm Detector, Dual Sensor Smoke Alarm&Carbon Monoxide Detector (Includes Battery)
    Amazon.com
    Free shipping
    $59.99
    BRK First Alert - PRC710B 10-Year Combination Carbon Monoxide And Photoelectric Smoke Detector, 1 - Pack
    WholesaleHome
    $59.99
    BRK First Alert - PRC710B 10-Year Combination Carbon Monoxide And Photoelectric Smoke Detector, 1 - Pack
    WholesaleHome
    $55.02
    Universal Security Instruments Inc Combination 2-In-1 Smoke And Fire Alarm Detector Hardwired 10-Year Sealed Battery Backup Multi-Criteria D AMI1061SB
    DkHardware.com
    $55.02
    Universal Security Instruments Inc Combination 2-In-1 Smoke And Fire Alarm Detector Hardwired 10-Year Sealed Battery Backup Multi-Criteria D AMI1061SB
    DkHardware.com
    $51.84
    First Alert Smoke And Carbon Monoxide Detector 10 Year Battery-Powered Ionization White 1046888
    DkHardware.com
    $51.84
    First Alert Smoke And Carbon Monoxide Detector 10 Year Battery-Powered Ionization White 1046888
    DkHardware.com
    $60.00
    Kidde Smoke And Carbon Monoxide Detector, 10-Year Battery Powered, LED Status Lights, 85 Db Alarm, 5-Inches, 30CUD10, 1 Pack
    Amazon.com
    Free shipping
    $60.00
    Kidde Smoke And Carbon Monoxide Detector, 10-Year Battery Powered, LED Status Lights, 85 Db Alarm, 5-Inches, 30CUD10, 1 Pack
    Amazon.com
    Free shipping
    $54.12
    $64.99
    New 2025 First Alert SMCO410 Z-Wave Battery-Powered Smoke Detector & Carbon Monoxide Alarm, Works With Ring Alarm Base Station, Single Pack, White
    Amazon.com
    Free shipping
    16% off
    $54.12
    $64.99
    New 2025 First Alert SMCO410 Z-Wave Battery-Powered Smoke Detector & Carbon Monoxide Alarm, Works With Ring Alarm Base Station, Single Pack, White
    Amazon.com
    Free shipping
    $139.99
    BRK SMCO110LED-AC Smoke & CO Alarm - Hardwired With LED Indicator, Battery Backup, And Dual Sensors, 1 Pack
    WholesaleHome
    $139.99
    BRK SMCO110LED-AC Smoke & CO Alarm - Hardwired With LED Indicator, Battery Backup, And Dual Sensors, 1 Pack
    WholesaleHome
    $47.51
    First Alert BRK Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector With Test & Silence Button, SMICO100, 1-Pack
    Amazon.com
    Free shipping
    $47.51
    First Alert BRK Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector With Test & Silence Button, SMICO100, 1-Pack
    Amazon.com
    Free shipping
    $92.52
    Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 2 Pack
    Amazon.com
    Free shipping
    $92.52
    Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 2 Pack
    Amazon.com
    Free shipping
    $41.98
    $44.99
    First Alert SM300-AC, Interconnect Hardwire Dual Sensor Smoke Alarm With Battery Backup, 1-Pack
    Amazon.com
    Free shipping
    $41.98
    $44.99
    First Alert SM300-AC, Interconnect Hardwire Dual Sensor Smoke Alarm With Battery Backup, 1-Pack
    Amazon.com
    Free shipping
    $57.99
    Sunco First Alert BRK SMICO100-AC Interconnect Hardwire Smoke And Carbon Monoxide Alarm
    Sunco
    30-day returns (most items)
    $57.99
    Sunco First Alert BRK SMICO100-AC Interconnect Hardwire Smoke And Carbon Monoxide Alarm
    Sunco
    30-day returns
    $39.98
    $44.99
    First Alert Combination Smoke & Carbon Monoxide Alarm, Battery-Operated Detector With Slim Profile Design, SMCO200, 1-Pack
    Amazon.com
    Free shipping
    11% off
    $39.98
    $44.99
    First Alert Combination Smoke & Carbon Monoxide Alarm, Battery-Operated Detector With Slim Profile Design, SMCO200, 1-Pack
    Amazon.com
    Free shipping
    $57.99
    First Alert 10 Year Ionization Smoke And Carbon Monoxide Detector - Battery
    Bed Bath & Beyond
    $57.99
    First Alert 10 Year Ionization Smoke And Carbon Monoxide Detector - Battery
    Bed Bath & Beyond