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$19.88
First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
29
$19.88
First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
29
$84.99
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators, 2 Pack
Amazon.com
1K+
Free shipping
$84.99
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators, 2 Pack
Amazon.com
1K+
$29.88
Kidde i12060 (21006376) 120V AC/DC Wire-In Ionization Smoke Alarm With 9V Battery Back Up - Contractor Packaging (Upgraded To SMACFEX-20-9003)
Electric Bargain Store
18
$29.88
Kidde i12060 (21006376) 120V AC/DC Wire-In Ionization Smoke Alarm With 9V Battery Back Up - Contractor Packaging (Upgraded To SMACFEX-20-9003)
Electric Bargain Store
18
$19.88
BRK Electronics First Alert 4120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
10
$19.88
BRK Electronics First Alert 4120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
10
$10.75
Kidde Firex i4618 Hardwired 120V Ionization Smoke Alarm
iverybers.com
Free shipping
$10.75
Kidde Firex i4618 Hardwired 120V Ionization Smoke Alarm
iverybers.com
Free shipping
$45.56
Universal Security Instruments Smoke And Fire Alarm: Smoke, Hardwired, Battery Backup, Hardwired Model: AMI1061SB
Grainger
74
$45.56
Universal Security Instruments Smoke And Fire Alarm: Smoke, Hardwired, Battery Backup, Hardwired Model: AMI1061SB
Grainger
74
$99.00
First Alert 9120B Smoke Detector, Hardwired Alarm With Battery Backup, 6-Pack
Amazon.com
27K+
Free shipping
$99.00
First Alert 9120B Smoke Detector, Hardwired Alarm With Battery Backup, 6-Pack
Amazon.com
27K+
$110.00
$134.97
Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable LED Warning Light Indicators, 2 Pack
Amazon.com
796
Free shipping
18% off
$110.00
$134.97
Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable LED Warning Light Indicators, 2 Pack
Amazon.com
796
$175.62
Air Products And Controls Duct Smoke Detector: 115V AC/230V AC/24V AC/24V DC Volt, Light Alert, Gray Model: SM-501-P
Grainger
$175.62
Air Products And Controls Duct Smoke Detector: 115V AC/230V AC/24V AC/24V DC Volt, Light Alert, Gray Model: SM-501-P
Grainger
$19.50
BRK 9120B Hardwired 120V Ionization Smoke Alarm With 9V Battery NEW
RES LLC Store Main
574
$19.50
BRK 9120B Hardwired 120V Ionization Smoke Alarm With 9V Battery NEW
RES LLC Store Main
574
$36.69
Kidde Smoke Alarm: Smoke, Hardwired, Battery Backup, Smoke Detector, Photoelectric, Hardwired, Round Model: SMACFEX
Grainger
14
$36.69
Kidde Smoke Alarm: Smoke, Hardwired, Battery Backup, Smoke Detector, Photoelectric, Hardwired, Round Model: SMACFEX
Grainger
14
$97.95
Kidde 21027323 120Vac Smoke Alarm & Carbon Monoxide Alarm Combination
Lite Store USA
$97.95
Kidde 21027323 120Vac Smoke Alarm & Carbon Monoxide Alarm Combination
Lite Store USA
$26.50
Kidde KN-COSM-IBA Hardwired 120V Electrochemical/Ionization Carbon Monoxide And Smoke Alarm
iverybers.com
18
Free shipping
$26.50
Kidde KN-COSM-IBA Hardwired 120V Electrochemical/Ionization Carbon Monoxide And Smoke Alarm
iverybers.com
18
$57.35
System Sensor 4WT-B Photoelectric i3 Smoke Detector, 4-Wire, 135F Fixed Thermal Sensor
JMAC
124
$57.35
System Sensor 4WT-B Photoelectric i3 Smoke Detector, 4-Wire, 135F Fixed Thermal Sensor
JMAC
124
$78.95
Hardwired Connected Smoke And Carbon Monoxide Detector With 2 AA Batteries Back Up Voice Alert Smoke And CO Alarm 2-Pack
Home Depot
10
Free shipping
$78.95
Hardwired Connected Smoke And Carbon Monoxide Detector With 2 AA Batteries Back Up Voice Alert Smoke And CO Alarm 2-Pack
Home Depot
10
$66.70
$140.07
First Alert Slim Photoelectric Smoke Alarm With 10-Year Battery
SHOP stravonberry
52% off
$66.70
$140.07
First Alert Slim Photoelectric Smoke Alarm With 10-Year Battery
SHOP stravonberry
$51.14
$107.39
First Alert Prc710 - 10-Year Sealed-Battery Photoelectric Smoke Carbon Monoxide Alarm
SHOP stravonberry
52% off
$51.14
$107.39
First Alert Prc710 - 10-Year Sealed-Battery Photoelectric Smoke Carbon Monoxide Alarm
SHOP stravonberry
$47.55
$64.67
Kidde i12060 Hardwire With Front Load Battery Backup Smoke Alarm
shedfriends
26% off
$47.55
$64.67
Kidde i12060 Hardwire With Front Load Battery Backup Smoke Alarm
shedfriends
$53.91
10 Years Battery Operated Smoke Detector, Fire Alarm With With Low Battery Warning, UL217 Listed Smoke Alarm,3 PACKS
Home Depot
9
Free shipping
$53.91
10 Years Battery Operated Smoke Detector, Fire Alarm With With Low Battery Warning, UL217 Listed Smoke Alarm,3 PACKS
Home Depot
9
$9.15
Kidde i9070 Battery Operated 9V Ionization Smoke Alarm
iverybers.com
8
Free shipping
$9.15
Kidde i9070 Battery Operated 9V Ionization Smoke Alarm
iverybers.com
8
$81.01
$170.10
First Alert Photoelectric Smoke Alarm With Integrated Strobe Light 7010BSL
SHOP stravonberry
52% off
$81.01
$170.10
First Alert Photoelectric Smoke Alarm With Integrated Strobe Light 7010BSL
SHOP stravonberry
$73.03
$111.00
Kidde KN-COSM-IBA Smoke And Carbon Monoxide Alarm
mihomemy
34% off
$73.03
$111.00
Kidde KN-COSM-IBA Smoke And Carbon Monoxide Alarm
mihomemy
$90.64
2WT-B HONEYWELL - Fire Safety & Smoke Detector Supplies
Radwell.com
$90.64
2WT-B HONEYWELL - Fire Safety & Smoke Detector Supplies
Radwell.com
$71.09
Combo Smoke And CO Detectors With Voice Alert, Battery Powered Sensor Fire And Carbon Monoxide Alarm, Auto-Check, 2-Pack
Home Depot
5
Free shipping
$71.09
Combo Smoke And CO Detectors With Voice Alert, Battery Powered Sensor Fire And Carbon Monoxide Alarm, Auto-Check, 2-Pack
Home Depot
5
$57.85
$77.37
Kidde Smoke Detector, Hardwired Smoke Alarm With Battery Backup, Test-Silence Button Pack Of 2
shedfriends
25% off
$57.85
$77.37
Kidde Smoke Detector, Hardwired Smoke Alarm With Battery Backup, Test-Silence Button Pack Of 2
shedfriends
$24.95
Kidde 21033081 Hardwired Smoke Alarm With Aa Battery Backup
Lite Store USA
$24.95
Kidde 21033081 Hardwired Smoke Alarm With Aa Battery Backup
Lite Store USA
$61.80
Kidde 21033276, Smart Smoke Alarm With Voice Alert, Detects Smoldering Fires, Photoelectric Sensor, Control And Notifications Through Ring App,
1000Bulbs.com
56
$61.80
Kidde 21033276, Smart Smoke Alarm With Voice Alert, Detects Smoldering Fires, Photoelectric Sensor, Control And Notifications Through Ring App,
1000Bulbs.com
56
$15.00
BRK SMI100-AC Hardwire Smoke Alarm 85Db Battery Backup Ionization UL NEW
RES LLC Store Main
1K+
$15.00
BRK SMI100-AC Hardwire Smoke Alarm 85Db Battery Backup Ionization UL NEW
RES LLC Store Main
1K+
$34.98
$52.47
First Alert Brk SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm With Battery Backup
hardclikk.com
33% off
$34.98
$52.47
First Alert Brk SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm With Battery Backup
hardclikk.com
$308.00
D4120 HONEYWELL - Fire Safety & Smoke Detector Supplies
Radwell.com
$308.00
D4120 HONEYWELL - Fire Safety & Smoke Detector Supplies
Radwell.com
$98.95
Hidden Smoke Detector Camera,Smoking Detector Surveillance Nanny Cam
Aroflit
$98.95
Hidden Smoke Detector Camera,Smoking Detector Surveillance Nanny Cam
Aroflit
$66.74
Kidde 21031514, Smoke And Carbon Monoxide Alarm, Detects Smoldering Fires And/Or CO Hazard, Photoelectric And Electrochemical Sensors, Battery
1000Bulbs.com
3
$66.74
Kidde 21031514, Smoke And Carbon Monoxide Alarm, Detects Smoldering Fires And/Or CO Hazard, Photoelectric And Electrochemical Sensors, Battery
1000Bulbs.com
3
$61.80
Kidde 21033278, Smart Smoke Alarm, Detects Smoldering Fires, Photoelectric Sensor, Control And Notifications Through Kidde App,Compatible With Alexa
1000Bulbs.com
45
$61.80
Kidde 21033278, Smart Smoke Alarm, Detects Smoldering Fires, Photoelectric Sensor, Control And Notifications Through Kidde App,Compatible With Alexa
1000Bulbs.com
45
$456.00
21033084 KIDDE - Fire Safety & Fire Alarm Supplies
Radwell.com
$456.00
21033084 KIDDE - Fire Safety & Fire Alarm Supplies
Radwell.com
$55.83
$79.76
Kidde Combination Smoke Carbon Monoxide Alarm Battery Operated Wireless-Interconnected
mihomemy
30% off
$55.83
$79.76
Kidde Combination Smoke Carbon Monoxide Alarm Battery Operated Wireless-Interconnected
mihomemy
$59.84
$76.20
Kidde Combination Smoke Carbon Monoxide Alarm Battery Operated Wireless-Interconnected
shedfriends
21% off
$59.84
$76.20
Kidde Combination Smoke Carbon Monoxide Alarm Battery Operated Wireless-Interconnected
shedfriends
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Sponsored
Top 10 Best Hardwired Smoke Detectors of 2025
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Shop smoke detector

Sponsored
About our ads
$19.88
First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
29
$19.88
First Alert 9120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
29
$84.99
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators, 2 Pack
Amazon.com
1K+
Free shipping
$84.99
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators, 2 Pack
Amazon.com
1K+
$29.88
Kidde i12060 (21006376) 120V AC/DC Wire-In Ionization Smoke Alarm With 9V Battery Back Up - Contractor Packaging (Upgraded To SMACFEX-20-9003)
Electric Bargain Store
18
$29.88
Kidde i12060 (21006376) 120V AC/DC Wire-In Ionization Smoke Alarm With 9V Battery Back Up - Contractor Packaging (Upgraded To SMACFEX-20-9003)
Electric Bargain Store
18
$19.88
BRK Electronics First Alert 4120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
10
$19.88
BRK Electronics First Alert 4120B 120V AC/DC Hardwired With 9V Battery Backup Ionization Smoke Alarm (Upgraded To SMI100-AC)
Electric Bargain Store
10
$10.75
Kidde Firex i4618 Hardwired 120V Ionization Smoke Alarm
iverybers.com
Free shipping
$10.75
Kidde Firex i4618 Hardwired 120V Ionization Smoke Alarm
iverybers.com
Free shipping
$45.56
Universal Security Instruments Smoke And Fire Alarm: Smoke, Hardwired, Battery Backup, Hardwired Model: AMI1061SB
Grainger
74
$45.56
Universal Security Instruments Smoke And Fire Alarm: Smoke, Hardwired, Battery Backup, Hardwired Model: AMI1061SB
Grainger
74
$99.00
First Alert 9120B Smoke Detector, Hardwired Alarm With Battery Backup, 6-Pack
Amazon.com
27K+
Free shipping
$99.00
First Alert 9120B Smoke Detector, Hardwired Alarm With Battery Backup, 6-Pack
Amazon.com
27K+
$110.00
$134.97
Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable LED Warning Light Indicators, 2 Pack
Amazon.com
796
Free shipping
18% off
$110.00
$134.97
Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable LED Warning Light Indicators, 2 Pack
Amazon.com
796
$175.62
Air Products And Controls Duct Smoke Detector: 115V AC/230V AC/24V AC/24V DC Volt, Light Alert, Gray Model: SM-501-P
Grainger
$175.62
Air Products And Controls Duct Smoke Detector: 115V AC/230V AC/24V AC/24V DC Volt, Light Alert, Gray Model: SM-501-P
Grainger
$19.50
BRK 9120B Hardwired 120V Ionization Smoke Alarm With 9V Battery NEW
RES LLC Store Main
574
$19.50
BRK 9120B Hardwired 120V Ionization Smoke Alarm With 9V Battery NEW
RES LLC Store Main
574
$36.69
Kidde Smoke Alarm: Smoke, Hardwired, Battery Backup, Smoke Detector, Photoelectric, Hardwired, Round Model: SMACFEX
Grainger
14
$36.69
Kidde Smoke Alarm: Smoke, Hardwired, Battery Backup, Smoke Detector, Photoelectric, Hardwired, Round Model: SMACFEX
Grainger
14
$97.95
Kidde 21027323 120Vac Smoke Alarm & Carbon Monoxide Alarm Combination
Lite Store USA
$97.95
Kidde 21027323 120Vac Smoke Alarm & Carbon Monoxide Alarm Combination
Lite Store USA
$26.50
Kidde KN-COSM-IBA Hardwired 120V Electrochemical/Ionization Carbon Monoxide And Smoke Alarm
iverybers.com
18
Free shipping
$26.50
Kidde KN-COSM-IBA Hardwired 120V Electrochemical/Ionization Carbon Monoxide And Smoke Alarm
iverybers.com
18
$57.35
System Sensor 4WT-B Photoelectric i3 Smoke Detector, 4-Wire, 135F Fixed Thermal Sensor
JMAC
124
$57.35
System Sensor 4WT-B Photoelectric i3 Smoke Detector, 4-Wire, 135F Fixed Thermal Sensor
JMAC
124
$78.95
Hardwired Connected Smoke And Carbon Monoxide Detector With 2 AA Batteries Back Up Voice Alert Smoke And CO Alarm 2-Pack
Home Depot
10
Free shipping
$78.95
Hardwired Connected Smoke And Carbon Monoxide Detector With 2 AA Batteries Back Up Voice Alert Smoke And CO Alarm 2-Pack
Home Depot
10
$66.70
$140.07
First Alert Slim Photoelectric Smoke Alarm With 10-Year Battery
SHOP stravonberry
52% off
$66.70
$140.07
First Alert Slim Photoelectric Smoke Alarm With 10-Year Battery
SHOP stravonberry
$51.14
$107.39
First Alert Prc710 - 10-Year Sealed-Battery Photoelectric Smoke Carbon Monoxide Alarm
SHOP stravonberry
52% off
$51.14
$107.39
First Alert Prc710 - 10-Year Sealed-Battery Photoelectric Smoke Carbon Monoxide Alarm
SHOP stravonberry
$47.55
$64.67
Kidde i12060 Hardwire With Front Load Battery Backup Smoke Alarm
shedfriends
26% off
$47.55
$64.67
Kidde i12060 Hardwire With Front Load Battery Backup Smoke Alarm
shedfriends