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Safety Equipment and GearAlarm SystemsAll Home SecurityBathroom PlumbingBLACK+DECKERBrackets and Angle IronsCarbon Monoxide AlarmsCaulking & SealantsDimmers, Switches, and Wall PlatesDoor HardwareDoor Security HardwareDoorbellsElectrical ToolsEmergency SuppliesEmersonFire SafetyFirst AlertFurniture HardwareGarage Door Openers and HardwareGarage Storage SystemsGate HardwareGatesGuttering & DrainageHand ToolsHome SafetyHome Safety by BrandHVAC Ducting and VentilationKiddeLight BulbsMailboxes and Mailbox AccessoriesOutletsPaint Supplies & ToolsPersonal PreparednessPersonal SafetyPower ToolsPro ToolsSafety DetectorsSealants, Fillers and AdhesivesSolderingStorage ContainersStorm & Flood PrepSurveillanceThermostatsTile Tools & MaterialsToilets and BidetsTool Equipment & StorageUniversal Security InstrumentsWater Heaters, Pumps & TanksWildfire Prep
Detectors(1000+)
Uses item details. Price when purchased online
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 $52.79 Was $59.99

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Now$5279
current price Now $52.79, 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
11 out of 5 Stars. 1 reviews
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SITERWELL Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm with 9V Backup Battery, Fire Alarm with Test/Silence Button, ETL-9th Listed, GS562A, 4 Packs From $19.19

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From$1919
SITERWELL Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm with 9V Backup Battery, Fire Alarm with Test/Silence Button, ETL-9th Listed, GS562A, 4 Packs
964.5 out of 5 Stars. 96 reviews
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Handheld Carbon Monoxide Meter CO Detector Portable CO Gas Leak Detector High Precision Carbon Monoxide Tester $40.99

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$4099
current price $40.99Handheld Carbon Monoxide Meter CO Detector Portable CO Gas Leak Detector High Precision Carbon Monoxide Tester
34 out of 5 Stars. 3 reviews
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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) $49.99

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$4999
current price $49.99Natural Gas Detector CH4, Combustible Gas Methane Alarm Battery Powered with Light & Audible Indicator,Gas Monitor Sensor for Home RV Kitchen Apartment Safety (Battery included)
25 out of 5 Stars. 2 reviews
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Overall pick 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
15724.7 out of 5 Stars. 1572 reviews
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100+ bought since yesterday Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-Inch, Batteries Included From $18.99

2 options
Available in additional 2 optionsFrom$1899
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-Inch, Batteries Included
6094.4 out of 5 Stars. 609 reviews
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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 $35.99

2 options
Available in additional 2 optionsFrom$3599
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, SC01, 1-PACK
Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch From $65.00

2 options
Available in additional 2 optionsFrom$6500
Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch
2484.4 out of 5 Stars. 248 reviews
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First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack From $52.99

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From$5299
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
114.1 out of 5 Stars. 11 reviews
SITERWELL Portable Plug in Carbon Monoxide (CO)Detector 10 Year Battery,Electrochemical,Sound Warning, AC Powered for Home Office Travel,3 packs From $51.19

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From$5119
SITERWELL Portable Plug in Carbon Monoxide (CO)Detector 10 Year Battery,Electrochemical,Sound Warning, AC Powered for Home Office Travel,3 packs
274.4 out of 5 Stars. 27 reviews
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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
6234.5 out of 5 Stars. 623 reviews
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100+ bought since yesterday 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
5914.6 out of 5 Stars. 591 reviews
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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
984.4 out of 5 Stars. 98 reviews
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Smoke Alarm Detector Home Fire Safety Sensor Alert

Smoke Alarm Detector Home Fire Safety Sensor Alert
34.7 out of 5 Stars. 3 reviews
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Kidde Hardwired Interconnectable Smoke and Carbon Monoxide Detector with AA Battery Backup and Voice Alerts $53.00

$5300
current price $53.00Kidde Hardwired Interconnectable Smoke and Carbon Monoxide Detector with AA Battery Backup and Voice Alerts
903.7 out of 5 Stars. 90 reviews
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Universal Security Instruments Battery, Smoke, Fire, and Carbon Monoxide, Alarm, with Voice Alerts $23.30

$2330
current price $23.30Universal Security Instruments Battery, Smoke, Fire, and Carbon Monoxide, Alarm, with Voice Alerts
84.3 out of 5 Stars. 8 reviews
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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
1194.7 out of 5 Stars. 119 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

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From$3999
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 1-Pack
1194.7 out of 5 Stars. 119 reviews
Handheld Carbon Monoxide Meter CO Detector Portable CO Gas Leak Detector High Precision Carbon Monoxide Tester $39.99

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$3999
current price $39.99Handheld Carbon Monoxide Meter CO Detector Portable CO Gas Leak Detector High Precision Carbon Monoxide Tester
43 out of 5 Stars. 4 reviews
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X-Sense Carbon Monoxide Detector Alarm with Digital LCD Display, Replaceable Battery CO Alarm Detector with Peak Value Memory, XC01-R $19.99 Was $24.99

Now$1999
current price Now $19.99, Was $24.99$24.99
X-Sense Carbon Monoxide Detector Alarm with Digital LCD Display, Replaceable Battery CO Alarm Detector with Peak Value Memory, XC01-R
X-Sense Carbon Monoxide Detectors Plug In, with AAA Battery Backup, Travel Carbon Monoxide Detector, 1-Pack From $19.99

2 options
Available in additional 2 optionsFrom$1999
X-Sense Carbon Monoxide Detectors Plug In, with AAA Battery Backup, Travel Carbon Monoxide Detector, 1-Pack
1324.6 out of 5 Stars. 132 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 $39.99

2 options
Available in additional 2 optionsFrom$3999
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 1 PACK, SC06
5294.6 out of 5 Stars. 529 reviews
50+ bought since yesterday Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Voice Alerts From $49.96

2 options
Available in additional 2 optionsFrom$4996
Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Voice Alerts
2784.5 out of 5 Stars. 278 reviews
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BRK Hard-Wired w/Battery Back-up Ionization Smoke Detector $19.25 Was $29.00

Now$1925
current price Now $19.25, Was $29.00$29.00
BRK Hard-Wired w/Battery Back-up Ionization Smoke Detector
884.6 out of 5 Stars. 88 reviews
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First Alert 10 Year Battery-Powered Photoelectric Smoke and Carbon Monoxide Detector $44.98

$4498
current price $44.98First Alert 10 Year Battery-Powered Photoelectric Smoke and Carbon Monoxide Detector
584.7 out of 5 Stars. 58 reviews
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SITERWELL Smoke Detector, Magnetic Fastening Kit, Smoke Alarm, Photoelectric ,Low Battery Warning Function, 1 Pack From $26.09

9 options
Available in additional 9 optionsFrom$2609
SITERWELL Smoke Detector, Magnetic Fastening Kit, Smoke Alarm, Photoelectric ,Low Battery Warning Function, 1 Pack
4364.4 out of 5 Stars. 436 reviews
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Smoke and Carbon Monoxide Detector Combo - CO & Smoke Alarm System with Hush Function, Self-Test Button, 10-Year Built-in Battery - Easy to Install, for Home & Office From $34.99

4 options
Available in additional 4 optionsFrom$3499
Smoke and Carbon Monoxide Detector Combo - CO & Smoke Alarm System with Hush Function, Self-Test Button, 10-Year Built-in Battery - Easy to Install, for Home & Office
164.4 out of 5 Stars. 16 reviews
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, 3 PACK, SC01 From $35.99

Sponsored
From$3599
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, 3 PACK, SC01
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 1 PACK, SC06 From $39.99

Sponsored
From$3999
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 1 PACK, SC06
5294.6 out of 5 Stars. 529 reviews
100+ bought since yesterday 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
4234.6 out of 5 Stars. 423 reviews
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First Alert Slim Battery-Powered Photoelectric Smoke and Carbon Monoxide Detector $39.90 Was $56.10

Now$3990
current price Now $39.90, Was $56.10$56.10
First Alert Slim Battery-Powered Photoelectric Smoke and Carbon Monoxide Detector
244.5 out of 5 Stars. 24 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 $25.99

8 options
Available in additional 8 optionsFrom$2599
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
1234.4 out of 5 Stars. 123 reviews
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Best seller 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
844.5 out of 5 Stars. 84 reviews
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Universal Security Instruments, Sensing Plus, Combo Smoke, Fire, and Carbon Monoxide Alarm, Multi-Criteria, with 10-Year Battery $58.00

$5800
current price $58.00Universal Security Instruments, Sensing Plus, Combo Smoke, Fire, and Carbon Monoxide Alarm, Multi-Criteria, with 10-Year Battery
114.8 out of 5 Stars. 11 reviews
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SITERWELL Smoke and Carbon Monoxide Detector 10-Year Battery, Wireless Interconnected Smoke Alarm Carbon Monoxide Detector with Dual Language Voice Alerts for Home and Babyroom, 1 Pack From $49.99

2 options
Available in additional 2 optionsFrom$4999
SITERWELL Smoke and Carbon Monoxide Detector 10-Year Battery, Wireless Interconnected Smoke Alarm Carbon Monoxide Detector with Dual Language Voice Alerts for Home and Babyroom, 1 Pack
314.6 out of 5 Stars. 31 reviews
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First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack From $52.99

4 options
Available in additional 4 optionsFrom$5299
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
114.1 out of 5 Stars. 11 reviews
First Alert 1046834, Electric Precision Detection Smoke Alarms $24.84 Was $33.00

Now$2484
current price Now $24.84, Was $33.00$33.00
First Alert 1046834, Electric Precision Detection Smoke Alarms
864.6 out of 5 Stars. 86 reviews
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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
2114.5 out of 5 Stars. 211 reviews
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Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch From $29.22

2 options
Available in additional 2 optionsFrom$2922
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch
2954 out of 5 Stars. 295 reviews
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Kidde 10-Year Sealed Lithium Battery-Operated Combination Smoke & Carbon Monoxide Detector From $60.00

2 options
Available in additional 2 optionsFrom$6000
Kidde 10-Year Sealed Lithium Battery-Operated Combination Smoke & Carbon Monoxide Detector
3784.2 out of 5 Stars. 378 reviews
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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
864.5 out of 5 Stars. 86 reviews
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Topvico Water Leak Detectors for Home, Basements, Sump Pump, Under Sink, Moisture Alarm Sensor, 120dB Battery Operated Flood Alert, 3-Pack (95 Inch Cable) $15.95

$1595
current price $15.95Topvico Water Leak Detectors for Home, Basements, Sump Pump, Under Sink, Moisture Alarm Sensor, 120dB Battery Operated Flood Alert, 3-Pack (95 Inch Cable)
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Plug-In CO Alarm $23.99

$2399
current price $23.99Plug-In CO Alarm
1714.5 out of 5 Stars. 171 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 $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
154.5 out of 5 Stars. 15 reviews
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Kidde Battery-Powered Electrochemical Carbon Monoxide Detector From $44.44

2 options
Available in additional 2 optionsFrom$4444
Kidde Battery-Powered Electrochemical Carbon Monoxide Detector
564.2 out of 5 Stars. 56 reviews
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First Alert GC01CN Combo Explosive Gas and Carbon Monoxide Alarm with Digital Display, 1039760PT $62.99 $74.11/ea

$6299
current price $62.99$74.11/ea
First Alert GC01CN Combo Explosive Gas and Carbon Monoxide Alarm with Digital Display, 1039760PT
45 out of 5 Stars. 4 reviews
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