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Safety Equipment and GearAlarm SystemsAll Home SecurityBathroom PlumbingBLACK+DECKERCarbon Monoxide AlarmsDimmers, Switches, and Wall PlatesDoor HardwareDoor Security HardwareDoorbellsElectrical ToolsElectronic Communication ComponentsEmergency SuppliesFire SafetyFirst AlertFurniture HardwareGarage Door Openers and HardwareGate HardwareGatesGuttering & DrainageHand ToolsHome SafetyHome Safety by BrandHVAC Ducting and VentilationKiddeLight BulbsMailboxes and Mailbox AccessoriesOutletsPersonal PreparednessPersonal SafetySafety DetectorsShop Plumbing by FixtureStorm & Flood PrepSurveillanceThermostatsTool Equipment & StorageUniversal Security InstrumentsWater Heaters, Pumps & TanksWildfire Prep
Detectors(1000+)
Uses item details. Price when purchased online
Deal X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC06 From $42.99
Sponsored
From$4299
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC06
6124.6 out of 5 Stars. 612 reviews
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC01 From $39.99
Sponsored
From$3999
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC01
484.4 out of 5 Stars. 48 reviews
Deal SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.3 pack From $35.14
Sponsored
From$3514
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.3 pack
64.3 out of 5 Stars. 6 reviews
SITERWELL Smoke Detector, 10 Year Battery,Photoelectric Sensor, Fire Alarm,Low Battery,12 Packs From $20.10
Sponsored
From$2010
SITERWELL Smoke Detector, 10 Year Battery,Photoelectric Sensor, Fire Alarm,Low Battery,12 Packs
1954.4 out of 5 Stars. 195 reviews
LCD Display CO Carbon Monoxide Gas Detector Device Home Safety Alarm Detector From $13.99
From$1399
LCD Display CO Carbon Monoxide Gas Detector Device Home Safety Alarm Detector
344.7 out of 5 Stars. 34 reviews
Overall pick Kidde AA Battery Operated Basic Carbon Monoxide Alarm - 9CO5-LP3 $23.44
$2344
current price $23.44Kidde AA Battery Operated Basic Carbon Monoxide Alarm - 9CO5-LP3
5554.6 out of 5 Stars. 555 reviews
100+ bought since yesterday Kidde Battery-Operated 4-inch Smoke Detector & Carbon Monoxide Value Pack, Batteries Included
3 options
Available in additional 3 optionsKidde Battery-Operated 4-inch Smoke Detector & Carbon Monoxide Value Pack, Batteries Included
7674.5 out of 5 Stars. 767 reviews
100+ bought since yesterday Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-Inch, Batteries Included From $19.88
2 options
Available in additional 2 optionsFrom$1988
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-Inch, Batteries Included
8024.5 out of 5 Stars. 802 reviews
Deal SITERWELL Smoke Detector, 10 Year Battery ,Photoelectric Sensor, Fire Alarm,Low Battery and Fault Warning for House and Bedroom, UL217-9th Listed, GS525A, 1 Packs From $20.10
8 options
Available in additional 8 optionsFrom$2010
SITERWELL Smoke Detector, 10 Year Battery ,Photoelectric Sensor, Fire Alarm,Low Battery and Fault Warning for House and Bedroom, UL217-9th Listed, GS525A, 1 Packs
1954.4 out of 5 Stars. 195 reviews
50+ bought since yesterday First Alert SMI100 Battery-Operated Smoke Alarm, 1046827PT $16.99 $28.80/ea
$1699
current price $16.99$28.80/ea
First Alert SMI100 Battery-Operated Smoke Alarm, 1046827PT
1534.6 out of 5 Stars. 153 reviews
SITERWELL Hardwired Interconnected Smoke and Carbon Monoxide Detector, 10 Year Product Life Alarm Smoke Carbon Monoxide Detector with 2 AA Batteries Back Up, Smoke and CO Detector Voice Alert,3 Pack From $54.99
Sponsored
From$5499
SITERWELL Hardwired Interconnected Smoke and Carbon Monoxide Detector, 10 Year Product Life Alarm Smoke Carbon Monoxide Detector with 2 AA Batteries Back Up, Smoke and CO Detector Voice Alert,3 Pack
224.2 out of 5 Stars. 22 reviews
(2 pack) Universal Security Instruments, Sensing Plus, Hardwired Smoke & Fire Alarm, Multi-Criteria Detection, with 10 Year Battery Backup $69.88 $34.94/ea
Sponsored
$6988
current price $69.88$34.94/ea
From $34.94
(2 pack) Universal Security Instruments, Sensing Plus, Hardwired Smoke & Fire Alarm, Multi-Criteria Detection, with 10 Year Battery Backup
1204.2 out of 5 Stars. 120 reviews
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch From $34.97
2 options
Available in additional 2 optionsFrom$3497
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch
3704.1 out of 5 Stars. 370 reviews
X-Sense Smoke Detector Carbon Monoxide Detector Combo 10 Year with Display, Standalone Model SC01 Smoke Alarm From $37.99
2 options
Available in additional 2 optionsFrom$3799
X-Sense Smoke Detector Carbon Monoxide Detector Combo 10 Year with Display, Standalone Model SC01 Smoke Alarm
6314.5 out of 5 Stars. 631 reviews
Smoke Alarm Home Security System Fire Protection Smoke Alarm Detector From $12.99
From$1299
Smoke Alarm Home Security System Fire Protection Smoke Alarm Detector
314.3 out of 5 Stars. 31 reviews
100+ bought since yesterday Kidde AC Plug-In Carbon Monoxide Detector with Battery Backup, CO Alarm with LED Light Indicators From $27.47
3 options
Available in additional 3 optionsFrom$2747
Kidde AC Plug-In Carbon Monoxide Detector with Battery Backup, CO Alarm with LED Light Indicators
18234.7 out of 5 Stars. 1823 reviews
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-inch, Batteries Included, 2 Pack From $36.88
2 options
Available in additional 2 optionsFrom$3688
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-inch, Batteries Included, 2 Pack
2754.6 out of 5 Stars. 275 reviews
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 1-Pack From $39.99
2 options
Available in additional 2 optionsFrom$3999
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 1-Pack
3374.6 out of 5 Stars. 337 reviews
SITERWELL Smoke Detector, Magnetic Fastening Kit, Smoke Alarm, Photoelectric ,Low Battery Warning Function, 1 Pack From $19.12
9 options
Available in additional 9 optionsFrom$1912
SITERWELL Smoke Detector, Magnetic Fastening Kit, Smoke Alarm, Photoelectric ,Low Battery Warning Function, 1 Pack
5524.4 out of 5 Stars. 552 reviews
Universal Security Instruments Inc Sensing Plus, Smoke and Fire Alarm, Multi-Criteria Detection, with 10 Year Sealed Battery $27.97
$2797
current price $27.97Universal Security Instruments Inc Sensing Plus, Smoke and Fire Alarm, Multi-Criteria Detection, with 10 Year Sealed Battery
1594.5 out of 5 Stars. 159 reviews
X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN From $43.99
Sponsored
From$4399
X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN
1774.7 out of 5 Stars. 177 reviews
Deal SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack From $22.32
Sponsored
From$2232
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack
164.8 out of 5 Stars. 16 reviews
Kidde Hardwired Photoelectric Smoke Detector Alarm, 10-Year Lithium Sealed Battery Backup From $35.97
2 options
Available in additional 2 optionsFrom$3597
Kidde Hardwired Photoelectric Smoke Detector Alarm, 10-Year Lithium Sealed Battery Backup
2333.7 out of 5 Stars. 233 reviews
Deal SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack From $22.32
3 options
Available in additional 3 optionsFrom$2232
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack
164.8 out of 5 Stars. 16 reviews
Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-COPP-B-LPM From $27.94
3 options
Available in additional 3 optionsFrom$2794
Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-COPP-B-LPM
7504.6 out of 5 Stars. 750 reviews
First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup $19.46 Was $24.95
Now$1946
current price Now $19.46, Was $24.95$24.95
First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup
664.7 out of 5 Stars. 66 reviews
Outdoor-Forest Brand, Carbon Monoxide Detector, Orange Color, LCD Screen $28.96
$2896
current price $28.96Outdoor-Forest Brand, Carbon Monoxide Detector, Orange Color, LCD Screen
1254.5 out of 5 Stars. 125 reviews
TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel $39.09 Was $45.99
Now$3909
current price Now $39.09, Was $45.99$45.99
TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel
234.5 out of 5 Stars. 23 reviews
Deal X-Sense Smoke and Carbon Monoxide Alarm Combo, 10 Year Sealed Battery, Wireless Interconnected Fire & CO Detector, Connects Up to 24 Link+ Devices, 1 PACK, SC06-W From $42.99
2 options
Available in additional 2 optionsFrom$4299
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10 Year Sealed Battery, Wireless Interconnected Fire & CO Detector, Connects Up to 24 Link+ Devices, 1 PACK, SC06-W
6124.6 out of 5 Stars. 612 reviews
Fixdono Natural Gas Detector, Digital Sound Warning Gas Detector, Natural Gas Leak Security Detection Detector, Alarm Monitor Plug-in Sensor for Home Kitchen Restaurant Hotel School Warehouse $15.96 Was $31.99
Now$1596
current price Now $15.96, Was $31.99$31.99
Fixdono Natural Gas Detector, Digital Sound Warning Gas Detector, Natural Gas Leak Security Detection Detector, Alarm Monitor Plug-in Sensor for Home Kitchen Restaurant Hotel School Warehouse
2804.4 out of 5 Stars. 280 reviews
X-Sense Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery, Up to 24 X-Sense Link+ Wireless Alarms, SC01-W, 3-Pack From $37.99
Sponsored
From$3799
X-Sense Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery, Up to 24 X-Sense Link+ Wireless Alarms, SC01-W, 3-Pack
6314.5 out of 5 Stars. 631 reviews
TOPTES Carbon Monoxide Detector with TFT Display CT-580, Rechargeable Handheld CO Inspection Device with Vibration, Visual and Audible Alarm, CO Detector for Home, Jobsite, Garage, and Travel $50.99 Was $59.99
Sponsored
Now$5099
current price Now $50.99, Was $59.99$59.99
TOPTES Carbon Monoxide Detector with TFT Display CT-580, Rechargeable Handheld CO Inspection Device with Vibration, Visual and Audible Alarm, CO Detector for Home, Jobsite, Garage, and Travel
44 out of 5 Stars. 4 reviews
First Alert 1046834, Electric Precision Detection Smoke Alarms $24.84
$2484
current price $24.84First Alert 1046834, Electric Precision Detection Smoke Alarms
1074.5 out of 5 Stars. 107 reviews
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included From $29.97
2 options
Available in additional 2 optionsFrom$2997
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included
1254.5 out of 5 Stars. 125 reviews
Kidde Hardwired Photoelectric Smoke Detector Alarm, AA Battery Backup, 5-inch From $34.84
2 options
Available in additional 2 optionsFrom$3484
Kidde Hardwired Photoelectric Smoke Detector Alarm, AA Battery Backup, 5-inch
1623.8 out of 5 Stars. 162 reviews
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-Inch, 2 Pack From $65.00
2 options
Available in additional 2 optionsFrom$6500
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-Inch, 2 Pack
1483.6 out of 5 Stars. 148 reviews
Deal Fixdono Natural Propane Gas Detector, Home Gas Alarm and Monitor, Leak Alarm for LNG, LPG, Methane in Kitchen, Home, Camper $15.29 Was $31.99
Now$1529
current price Now $15.29, Was $31.99$31.99
Fixdono Natural Propane Gas Detector, Home Gas Alarm and Monitor, Leak Alarm for LNG, LPG, Methane in Kitchen, Home, Camper
1524.5 out of 5 Stars. 152 reviews
First Alert SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup, Ionization $49.51
$4951
current price $49.51First Alert SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup, Ionization
1244.2 out of 5 Stars. 124 reviews
BRK Hard-Wired w/Battery Back-up Ionization Smoke Detector $24.99 Was $29.00
Now$2499
current price Now $24.99, Was $29.00$29.00
BRK Hard-Wired w/Battery Back-up Ionization Smoke Detector
1414.7 out of 5 Stars. 141 reviews
First Alert Voice Alert Hard-Wired Photoelectric Smoke Detector $34.90
$3490
current price $34.90First Alert Voice Alert Hard-Wired Photoelectric Smoke Detector
234.5 out of 5 Stars. 23 reviews
Siterwell AA Battery Operated Carbon Monoxide Detector Alarm, LCD Display,Portable for Travel Home,1-pack From $21.31
3 options
Available in additional 3 optionsFrom$2131
Siterwell AA Battery Operated Carbon Monoxide Detector Alarm, LCD Display,Portable for Travel Home,1-pack
1344.6 out of 5 Stars. 134 reviews
Deal SITERWELL Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm with 9V Backup Battery, Fire Alarm with Test/Silence Button, ETL-9th Listed, GS562A, 3 Packs From $20.97
9 options
Available in additional 9 optionsFrom$2097
SITERWELL Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm with 9V Backup Battery, Fire Alarm with Test/Silence Button, ETL-9th Listed, GS562A, 3 Packs
1364.4 out of 5 Stars. 136 reviews
X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN From $43.99
2 options
Available in additional 2 optionsFrom$4399
X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN
1774.7 out of 5 Stars. 177 reviews
Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup From $51.00
3 options
Available in additional 3 optionsFrom$5100
Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup
1914 out of 5 Stars. 191 reviews
Deal SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.1 pack From $35.14
3 options
Available in additional 3 optionsFrom$3514
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.1 pack
64.3 out of 5 Stars. 6 reviews
First Alert SMCO200V Battery-Operated 2-in-1 Smoke and CO Alarm with Voice and Location Alerts, 1046795 $36.99
$3699
current price $36.99First Alert SMCO200V Battery-Operated 2-in-1 Smoke and CO Alarm with Voice and Location Alerts, 1046795
264.8 out of 5 Stars. 26 reviews
Photoelectric Smoke Alarm Detector, Home Fire Safety Sensor Alert, 3V AA Battery Operated, No Wiring Required From $14.99
From$1499
Photoelectric Smoke Alarm Detector, Home Fire Safety Sensor Alert, 3V AA Battery Operated, No Wiring Required
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, SC01, 1-PACK From $39.99
2 options
Available in additional 2 optionsFrom$3999
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, SC01, 1-PACK
484.4 out of 5 Stars. 48 reviews
Rely Essentials 4500 Smoke Alarm - Battery Operated Photoelectric Sensor Smoke Detector - Compact 4-Inch Design - Home Fire Protection - Easy Installation - 1 Pack $20.39 Was $25.49
Now$2039
current price Now $20.39, Was $25.49$25.49
Rely Essentials 4500 Smoke Alarm - Battery Operated Photoelectric Sensor Smoke Detector - Compact 4-Inch Design - Home Fire Protection - Easy Installation - 1 Pack
124.6 out of 5 Stars. 12 reviews
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