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Safety Equipment and GearAlarm SystemsAll Home SecurityAll Tool SetsBathroom PlumbingBLACK+DECKERCarbon Monoxide AlarmsDimmers, Switches, and Wall PlatesDoor HardwareDoor Security HardwareDoorbellsElectrical ToolsEmergency SuppliesFire SafetyFirst AlertFurniture HardwareGarage Door Openers and HardwareGate HardwareGatesGuttering & DrainageHand ToolsHome SafetyHome Safety by BrandHVAC Ducting and VentilationKiddeLight BulbsMailboxes and Mailbox AccessoriesMechanics ToolsPaint Supplies & ToolsPersonal PreparednessPersonal SafetySafety DetectorsSealants, Fillers and AdhesivesStorm & Flood PrepSurveillanceThermostatsTool Equipment & StorageUniversal Security InstrumentsWater Heaters, Pumps & TanksWildfire Prep
Detectors(1000+)
Uses item details. Price when purchased online
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
6234.6 out of 5 Stars. 623 reviews
X-Sense Wireless Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery Alarm With Display, Over 820 ft Transmission Range, SC07-W, 3-Pack From $42.99
Sponsored
From$4299
X-Sense Wireless Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery Alarm With Display, Over 820 ft Transmission Range, SC07-W, 3-Pack
3574.6 out of 5 Stars. 357 reviews
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.3 pack From $39.99
Sponsored
From$3999
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.3 pack
74.4 out of 5 Stars. 7 reviews
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SITERWELL Smoke Detector, 10 Year Battery,Photoelectric Sensor, Fire Alarm,Low Battery,12 Packs From $25.12
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From$2512
SITERWELL Smoke Detector, 10 Year Battery,Photoelectric Sensor, Fire Alarm,Low Battery,12 Packs
2044.4 out of 5 Stars. 204 reviews
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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
7664.6 out of 5 Stars. 766 reviews
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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
5734.7 out of 5 Stars. 573 reviews
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50+ bought since yesterday 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
3874.1 out of 5 Stars. 387 reviews
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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
1634.6 out of 5 Stars. 163 reviews
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SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack From $24.80
3 options
Available in additional 3 optionsFrom$2480
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack
304.6 out of 5 Stars. 30 reviews
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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 $25.12
8 options
Available in additional 8 optionsFrom$2512
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
2044.4 out of 5 Stars. 204 reviews
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X-Sense Smoke and Carbon Monoxide Alarm Combo, 10 Year Battery, Wireless Interconnected Smoke Detector, Connects Up to 24 Link+ Alarms, 6 Pack, SC01-W From $42.99
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From$4299
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10 Year Battery, Wireless Interconnected Smoke Detector, Connects Up to 24 Link+ Alarms, 6 Pack, SC01-W
604.5 out of 5 Stars. 60 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,5 Pack From $54.99
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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,5 Pack
244.1 out of 5 Stars. 24 reviews
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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
8314.5 out of 5 Stars. 831 reviews
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Best seller PANGAEA Digital RV Propane Gas Detector with 85dB Loud Alarm, DC 12V, for Trailer, Motorhome, Motorcoach (Surface Mount - White)
3 options
Available in additional 3 optionsPANGAEA Digital RV Propane Gas Detector with 85dB Loud Alarm, DC 12V, for Trailer, Motorhome, Motorcoach (Surface Mount - White)
104.9 out of 5 Stars. 10 reviews
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50+ bought since yesterday 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
2904.6 out of 5 Stars. 290 reviews
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SITERWELL Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm with 9V Backup Battery, Fire Alarm with Test/Silence Button, ETL Listed, GS562A, 1 Pack From $26.21
9 options
Available in additional 9 optionsFrom$2621
SITERWELL Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm with 9V Backup Battery, Fire Alarm with Test/Silence Button, ETL Listed, GS562A, 1 Pack
1444.4 out of 5 Stars. 144 reviews
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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
414.8 out of 5 Stars. 41 reviews
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X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 1 PACK, SC06 From $42.99
2 options
Available in additional 2 optionsFrom$4299
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 1 PACK, SC06
6234.6 out of 5 Stars. 623 reviews
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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
1264.2 out of 5 Stars. 126 reviews
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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
394.4 out of 5 Stars. 39 reviews
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X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN From $42.99
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From$4299
X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN
1844.7 out of 5 Stars. 184 reviews
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(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
1254.2 out of 5 Stars. 125 reviews
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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
1454.7 out of 5 Stars. 145 reviews
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 $42.99
2 options
Available in additional 2 optionsFrom$4299
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, SC01, 1-PACK
604.5 out of 5 Stars. 60 reviews
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X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN From $42.99
2 options
Available in additional 2 optionsFrom$4299
X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN
1844.7 out of 5 Stars. 184 reviews
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Smoke Alarm Detector Home Safety Sensor Alert From $12.99
From$1299
Smoke Alarm Detector Home Safety Sensor Alert
644 out of 5 Stars. 64 reviews
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SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.1 pack From $39.99
3 options
Available in additional 3 optionsFrom$3999
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.1 pack
74.4 out of 5 Stars. 7 reviews
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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
1684.6 out of 5 Stars. 168 reviews
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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
2363.7 out of 5 Stars. 236 reviews
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Smoke Alarm Detector Home Fire Safety Sensor Alert
Smoke Alarm Detector Home Fire Safety Sensor Alert
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SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack From $24.80
Sponsored
From$2480
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack
304.6 out of 5 Stars. 30 reviews
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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 $53.99 Was $59.99
Sponsored
Now$5399
current price Now $53.99, 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
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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
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First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup $19.49 Was $24.95
Now$1949
current price Now $19.49, Was $24.95$24.95
First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup
714.7 out of 5 Stars. 71 reviews
Smoke Detector Home Security Sensor Alert Alarm From $13.39
From$1339
Smoke Detector Home Security Sensor Alert Alarm
114.1 out of 5 Stars. 11 reviews
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SITERWELL Smoke Detector, Magnetic Fastening Kit, Smoke Alarm, Photoelectric ,Low Battery Warning Function, 1 Pack From $19.52
9 options
Available in additional 9 optionsFrom$1952
SITERWELL Smoke Detector, Magnetic Fastening Kit, Smoke Alarm, Photoelectric ,Low Battery Warning Function, 1 Pack
5714.4 out of 5 Stars. 571 reviews
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First Alert 1046834, Electric Precision Detection Smoke Alarms $24.84
$2484
current price $24.84First Alert 1046834, Electric Precision Detection Smoke Alarms
1084.5 out of 5 Stars. 108 reviews
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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
1294.4 out of 5 Stars. 129 reviews
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Rely Essentials 5500 Smoke Detector - 10 Year Sealed Battery - Photoelectric Sensor Smoke Detector - Compact 4-Inch Design- Home Fire Protection - Easy Installation - 1 Pack $25.49
$2549
current price $25.49Rely Essentials 5500 Smoke Detector - 10 Year Sealed Battery - Photoelectric Sensor Smoke Detector - Compact 4-Inch Design- Home Fire Protection - Easy Installation - 1 Pack
134.8 out of 5 Stars. 13 reviews
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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
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Rollback Outdoor-Forest Brand, Carbon Monoxide Detector, Orange Color, LCD Screen $24.37 Was $28.96
Now$2437
current price Now $24.37, Was $28.96$28.96
Outdoor-Forest Brand, Carbon Monoxide Detector, Orange Color, LCD Screen
1274.5 out of 5 Stars. 127 reviews
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TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel $41.39 Was $45.99
Now$4139
current price Now $41.39, 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
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First Alert Slim Battery-Powered Photoelectric Smoke and Carbon Monoxide Detector $46.95 Was $56.10
Now$4695
current price Now $46.95, Was $56.10$56.10
First Alert Slim Battery-Powered Photoelectric Smoke and Carbon Monoxide Detector
334.6 out of 5 Stars. 33 reviews
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First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack $49.97
$4997
current price $49.97First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack
604.6 out of 5 Stars. 60 reviews
Shelly Gas CNG detector | Wi-Fi Smart Gas Sensor with Sound and Light Alarm | Certified | Flame Resistant | Wire-free | Scene Activation | iOS & Android App
Shelly Gas CNG detector | Wi-Fi Smart Gas Sensor with Sound and Light Alarm | Certified | Flame Resistant | Wire-free | Scene Activation | iOS & Android App
64.7 out of 5 Stars. 6 reviews
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 1-Pack From $42.99
2 options
Available in additional 2 optionsFrom$4299
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 1-Pack
3574.6 out of 5 Stars. 357 reviews
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Fixdono Natural Propane Gas Detector, Home Gas Alarm and Monitor, Leak Alarm for LNG, LPG, Methane in Kitchen, Home, Camper $16.19 Was $31.99
Now$1619
current price Now $16.19, 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
1564.5 out of 5 Stars. 156 reviews
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First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery
First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery
4864.5 out of 5 Stars. 486 reviews
GasKnight Natural Gas Detector & Propane Detector. Natural Gas Leak Detection and Monitor for Home, Kitchen, Camper, Trailer or RV. Plug-In Gas Leak Sensor for LPG, LNG, Methane & Butane Gases From $24.99
2 options
Available in additional 2 optionsFrom$2499
GasKnight Natural Gas Detector & Propane Detector. Natural Gas Leak Detection and Monitor for Home, Kitchen, Camper, Trailer or RV. Plug-In Gas Leak Sensor for LPG, LNG, Methane & Butane Gases
584.7 out of 5 Stars. 58 reviews
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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
1663.8 out of 5 Stars. 166 reviews
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