Some results have been hidden because they may be inaccessible to you.Show inaccessible results
    See more images

    Shop Honeywell Cd400a Smoke Alarm

    Sponsored
    $102.79
    Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack
    Amazon.com
    Free shipping
    $102.79
    Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack
    Amazon.com
    Free shipping
    $108.60
    Honeywell - 5193SD - Smoke Detector, Photo, Vplex
    Amazon.com
    Free shipping
    $108.60
    Honeywell - 5193SD - Smoke Detector, Photo, Vplex
    Amazon.com
    Free shipping
    $51.65
    Kidde Smoke Detector, 10-Year Battery, LED Indicators, Replacement Alert, Test-Reset Button, 2 Pack
    Amazon.com
    Free shipping
    $51.65
    Kidde Smoke Detector, 10-Year Battery, LED Indicators, Replacement Alert, Test-Reset Button, 2 Pack
    Amazon.com
    Free shipping
    $75.97
    Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 2 Pack
    Amazon.com
    137
    Free shipping
    $75.97
    Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 2 Pack
    Amazon.com
    137
    $159.78
    System Sensor DUCTSD Smoke Detector AC/DC Power Rectangular
    Voomi Supply
    $159.78
    System Sensor DUCTSD Smoke Detector AC/DC Power Rectangular
    Voomi Supply
    $19.99
    Kidde Firex i4618 120VAC Ionization Sensor Hardwired Smoke Alarm - 21007581
    Acme Tools
    7
    $19.99
    Kidde Firex i4618 120VAC Ionization Sensor Hardwired Smoke Alarm - 21007581
    Acme Tools
    7
    $109.43
    First Alert BRK 9120Bff-6 Hardwired Smoke Detector With Battery Backup, 6-Pack
    Amazon.com
    Free shipping
    $109.43
    First Alert BRK 9120Bff-6 Hardwired Smoke Detector With Battery Backup, 6-Pack
    Amazon.com
    Free shipping
    $115.00
    Kidde Hardwired Smoke Detector, AA Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack
    Amazon.com
    83
    Free shipping
    $115.00
    Kidde Hardwired Smoke Detector, AA Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack
    Amazon.com
    83
    $117.20
    Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators, 2 Pack
    Amazon.com
    1K+
    Free shipping
    $117.20
    Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators, 2 Pack
    Amazon.com
    1K+
    $176.00
    HONEYWELL DNRA - Fire Safety & Smoke Detector Supplies
    Radwell.com
    $176.00
    HONEYWELL DNRA - Fire Safety & Smoke Detector Supplies
    Radwell.com
    $35.99
    LSHOME 4 Pack Smoke Detector Fire Alarms 9V Battery Operated Photoelectric Sensor Smoke Alarms Easy To Install With Light Sound Warning, Test Button
    Amazon.com
    Free shipping
    $35.99
    LSHOME 4 Pack Smoke Detector Fire Alarms 9V Battery Operated Photoelectric Sensor Smoke Alarms Easy To Install With Light Sound Warning, Test Button
    Amazon.com
    Free shipping
    $69.99
    Smoke Detector And Carbon Monoxide Detector Co2 Detector Battery Powered With Test/Reset Button 4 Pack
    Amazon.com
    345
    Free shipping
    $69.99
    Smoke Detector And Carbon Monoxide Detector Co2 Detector Battery Powered With Test/Reset Button 4 Pack
    Amazon.com
    345
    $25.99
    Universal Security Instruments Hardwired Ionization Smoke And Fire Alarm With Battery Backup, Model 5304
    Amazon.com
    Free shipping
    $25.99
    Universal Security Instruments Hardwired Ionization Smoke And Fire Alarm With Battery Backup, Model 5304
    Amazon.com
    Free shipping
    $148.57
    Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 4 Pack
    Amazon.com
    Free shipping
    $148.57
    Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 4 Pack
    Amazon.com
    Free shipping
    $62.99
    4 Pack Combination Smoke And Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm For Home, Kitchen
    Amazon.com
    Free shipping
    $62.99
    4 Pack Combination Smoke And Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm For Home, Kitchen
    Amazon.com
    Free shipping
    $35.90
    4 Pack Smoke Detector Fire Alarms 9V Battery Operated Photoelectric Sensor Smoke Alarms Easy To Install With Light Sound Warning, Test Button,9V
    Amazon.com
    276
    Free shipping
    $35.90
    4 Pack Smoke Detector Fire Alarms 9V Battery Operated Photoelectric Sensor Smoke Alarms Easy To Install With Light Sound Warning, Test Button,9V
    Amazon.com
    276
    $42.99
    System Sensor 2W-B i3 Series 2-Wire, Photoelectric i3 Smoke Detector
    Amazon.com
    219
    Free shipping
    $42.99
    System Sensor 2W-B i3 Series 2-Wire, Photoelectric i3 Smoke Detector
    Amazon.com
    219
    $64.00
    SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector With Thermal, Sounder, And Base
    Amazon.com
    41
    Free shipping
    $64.00
    SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector With Thermal, Sounder, And Base
    Amazon.com
    41

    • 5 Best Smoke Detectors 2025 | Best Smoke Detectors In 2025

      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

      There's One Clear Winner · View Our Experts #1 Pick · Top-Rated Reviews & Deals

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

      5/5 (780 reviews)