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Safety Equipment and GearAlarm SystemsAll Home SecurityBathroom PlumbingBLACK+DECKERCarbon Monoxide AlarmsDimmers, Switches, and Wall PlatesDoor HardwareDoor Security HardwareDoorbellsElectrical ToolsEmergency SuppliesEmersonFire 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
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.3 pack From $51.90
Sponsored
From$5190
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.3 pack
55 out of 5 Stars. 5 reviews
SITERWELL Smoke Detector, 10 Year Battery,Photoelectric Sensor, Fire Alarm,Low Battery,12 Packs From $23.68
Sponsored
From$2368
SITERWELL Smoke Detector, 10 Year Battery,Photoelectric Sensor, Fire Alarm,Low Battery,12 Packs
1934.4 out of 5 Stars. 193 reviews
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC06 From $43.19
Sponsored
From$4319
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC06
6064.6 out of 5 Stars. 606 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,1 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,1 Pack
224.2 out of 5 Stars. 22 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
50+ bought since yesterday Kidde Battery-Operated 4-inch Smoke Detector & Carbon Monoxide Value Pack, Batteries Included From $38.97
3 options
Available in additional 3 optionsFrom$3897
Kidde Battery-Operated 4-inch Smoke Detector & Carbon Monoxide Value Pack, Batteries Included
7654.5 out of 5 Stars. 765 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
8014.5 out of 5 Stars. 801 reviews
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch From $32.47
2 options
Available in additional 2 optionsFrom$3247
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch
3694.1 out of 5 Stars. 369 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
6304.5 out of 5 Stars. 630 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
(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
X-Sense Smoke Detector Carbon Monoxide Detector Combo 10 Year with Display, Standalone Model SC01 Smoke Alarm, 3 Pack From $37.99
Sponsored
From$3799
X-Sense Smoke Detector Carbon Monoxide Detector Combo 10 Year with Display, Standalone Model SC01 Smoke Alarm, 3 Pack
6304.5 out of 5 Stars. 630 reviews
Best seller X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 1-Pack From $40.99
2 options
Available in additional 2 optionsFrom$4099
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 1-Pack
3064.6 out of 5 Stars. 306 reviews
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 $23.68
8 options
Available in additional 8 optionsFrom$2368
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
1934.4 out of 5 Stars. 193 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
18094.7 out of 5 Stars. 1809 reviews
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
2734.5 out of 5 Stars. 273 reviews
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 1 PACK, SC06 From $43.19
2 options
Available in additional 2 optionsFrom$4319
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 1 PACK, SC06
6064.6 out of 5 Stars. 606 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
1524.6 out of 5 Stars. 152 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
1574.5 out of 5 Stars. 157 reviews
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 $39.99
Sponsored
From$3999
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
454.4 out of 5 Stars. 45 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 $59.99
Sponsored
$5999
current price $59.99TOPTES 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 SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup, Ionization $49.81
$4981
current price $49.81First Alert SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup, Ionization
1244.2 out of 5 Stars. 124 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
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
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
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
First Alert Hardwired Smoke Alarm with Battery Backup 6 PACK $122.43 Was $139.99
Now$12243
current price Now $122.43, Was $139.99$139.99
First Alert Hardwired Smoke Alarm with Battery Backup 6 PACK
384.7 out of 5 Stars. 38 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 Was $35.99
2 options
Available in additional 2 optionsGasKnight 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
564.7 out of 5 Stars. 56 reviews
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
514.5 out of 5 Stars. 51 reviews
TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel $45.99
Sponsored
$4599
current price $45.99TOPTES 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
Natural Gas Detector CH4, Combustible Gas Methane Alarm Battery Powered with Light & Audible Indicator,Gas Monitor Sensor for Home RV Kitchen Apartment Safety (Battery included) $39.99
Sponsored
$3999
current price $39.99Natural Gas Detector CH4, Combustible Gas Methane Alarm Battery Powered with Light & Audible Indicator,Gas Monitor Sensor for Home RV Kitchen Apartment Safety (Battery included)
84.5 out of 5 Stars. 8 reviews
TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel $45.99
$4599
current price $45.99TOPTES 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
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
164.8 out of 5 Stars. 16 reviews
First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup $19.67
$1967
current price $19.67First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup
664.7 out of 5 Stars. 66 reviews
Siterwell AA Battery Operated Carbon Monoxide Detector Alarm, LCD Display,Portable for Travel Home,1-pack From $25.78
3 options
Available in additional 3 optionsFrom$2578
Siterwell AA Battery Operated Carbon Monoxide Detector Alarm, LCD Display,Portable for Travel Home,1-pack
1344.6 out of 5 Stars. 134 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
Rely Essentials 5400 Smoke Alarm Hardwired AC Powered with Battery Backup - Photoelectric Smoke Detector - Interconnect, Easy Install 1 Pack $29.99
$2999
current price $29.99Rely Essentials 5400 Smoke Alarm Hardwired AC Powered with Battery Backup - Photoelectric Smoke Detector - Interconnect, Easy Install 1 Pack
124.8 out of 5 Stars. 12 reviews
First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display $50.45 Was $62.99
Now$5045
current price Now $50.45, Was $62.99$62.99
First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display
884.4 out of 5 Stars. 88 reviews
X-Sense Interconnected Smoke & Carbon Monoxide Alarm, 10-Year Battery Powered Detector, Links 24 Devices, 1 PACK, XP0H-WN From $45.99
2 options
Available in additional 2 optionsFrom$4599
X-Sense Interconnected Smoke & Carbon Monoxide Alarm, 10-Year Battery Powered Detector, Links 24 Devices, 1 PACK, XP0H-WN
1774.7 out of 5 Stars. 177 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
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
4894.4 out of 5 Stars. 489 reviews
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10 Year Battery, Wireless Interconnected Smoke Detector, Connects Up to 24 Link+ Alarms, 1 Pack, SC01-W From $39.99
2 options
Available in additional 2 optionsFrom$3999
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10 Year Battery, Wireless Interconnected Smoke Detector, Connects Up to 24 Link+ Alarms, 1 Pack, SC01-W
454.4 out of 5 Stars. 45 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
Rely Essentials 4500 Smoke Alarm - Battery Operated Photoelectric Sensor Smoke Detector - Compact 4-Inch Design - Home Fire Protection - Easy Installation - 1 Pack $25.49
$2549
current price $25.49Rely 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
USI 3-IN-1 TAMPER PROOF SMOKE, FIRE, AND CARBON MONOXIDE SMART ALARM WITH 10 YEAR SEALED BATTERY BACK-UP, HARDWIRED $109.99 $109.99/lb
$10999
current price $109.99$109.99/lb
USI 3-IN-1 TAMPER PROOF SMOKE, FIRE, AND CARBON MONOXIDE SMART ALARM WITH 10 YEAR SEALED BATTERY BACK-UP, HARDWIRED
134.2 out of 5 Stars. 13 reviews
First Alert SMCO210 Sealed 10-Year-Battery 2-in-1 Smoke and CO Alarm with Slim Profile, 1046796 $46.99
$4699
current price $46.99First Alert SMCO210 Sealed 10-Year-Battery 2-in-1 Smoke and CO Alarm with Slim Profile, 1046796
1514.4 out of 5 Stars. 151 reviews
BRK Hard-Wired w/Battery Back-Up Ionization Smoke and Carbon Monoxide Detector Was $64.00
BRK Hard-Wired w/Battery Back-Up Ionization Smoke and Carbon Monoxide Detector
674.4 out of 5 Stars. 67 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
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