Resold GeneratorsResold Generators & Power StationsSafety Equipment and GearAir QualityAlarm SystemsAll Home SecurityBathroom PlumbingCarbon Monoxide AlarmsCommercial LightingEmergency SuppliesFire SafetyFireplacesFirst AlertHome SafetyHome Safety by BrandHVAC Ducting and VentilationKiddeKitchen PlumbingPersonal PreparednessPersonal SafetyPower Tool AccessoriesSafety DetectorsShop Plumbing BrandsStorm & Flood PrepSurveillanceUniversal Security InstrumentsWater HeatersWater Heaters, Pumps & TanksWildfire Prep
Sort by|
Resold GeneratorsResold Generators & Power StationsSafety Equipment and GearAir QualityAlarm SystemsAll Home SecurityBathroom PlumbingCarbon Monoxide AlarmsCommercial LightingEmergency SuppliesFire SafetyFireplacesFirst AlertHome SafetyHome Safety by BrandHVAC Ducting and VentilationKiddeKitchen PlumbingPersonal PreparednessPersonal SafetyPower Tool AccessoriesSafety DetectorsShop Plumbing BrandsStorm & Flood PrepSurveillanceUniversal Security InstrumentsWater HeatersWater Heaters, Pumps & TanksWildfire Prep
Gas Sensor Co(170)
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 $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
Save with
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) $37.99
Sponsored
$3799
current price $37.99Natural Gas Detector CH4, Combustible Gas Methane Alarm Battery Powered with Light & Audible Indicator,Gas Monitor Sensor for Home RV Kitchen Apartment Safety (Battery included)
114.3 out of 5 Stars. 11 reviews
Save with
Siterwell AA Battery Operated Carbon Monoxide Detector Alarm, LCD Display,Portable for Travel Home,1-pack From $25.99
Sponsored
From$2599
Siterwell AA Battery Operated Carbon Monoxide Detector Alarm, LCD Display,Portable for Travel Home,1-pack
1374.6 out of 5 Stars. 137 reviews
Save with
Veevvio Handheld 3-in-1 Carbon Monoxide Detector, Temperature & Humidity Monitor – Portable Electrochemical Sensor Alarm for Home, Travel, Car, Apartment – Air Quality Tester $29.99 Was $39.99
Sponsored
Now$2999
current price Now $29.99, Was $39.99$39.99
Veevvio Handheld 3-in-1 Carbon Monoxide Detector, Temperature & Humidity Monitor – Portable Electrochemical Sensor Alarm for Home, Travel, Car, Apartment – Air Quality Tester
95 out of 5 Stars. 9 reviews
Save with
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
Save with
Best seller 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 $17.99 Was $31.99
Now$1799
current price Now $17.99, 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
2874.4 out of 5 Stars. 287 reviews
Save with
Siterwell AA Battery Operated Carbon Monoxide Detector Alarm, LCD Display,Portable for Travel Home,1-pack From $25.99
3 options
Available in additional 3 optionsFrom$2599
Siterwell AA Battery Operated Carbon Monoxide Detector Alarm, LCD Display,Portable for Travel Home,1-pack
1374.6 out of 5 Stars. 137 reviews
Save with
Clearance 6-in-1 Portable Gas Detector, Plug-in & Battery Powered CO Smoke Gas Monitor with 2.8" Rotatable HD Screen, 85dB Alarm, High-Precision Sensor for Home, RV, Camping & Car Travel From $24.99
3 options
Available in additional 3 optionsFrom$2499
6-in-1 Portable Gas Detector, Plug-in & Battery Powered CO Smoke Gas Monitor with 2.8" Rotatable HD Screen, 85dB Alarm, High-Precision Sensor for Home, RV, Camping & Car Travel
Clearance 2026 New 4-in-1 Gas Detector, CO and Natural Gas Monitor with Digital Display, Home Safety Alert Device for Kitchen, Garage, Office,1Pc Was $24.99
2026 New 4-in-1 Gas Detector, CO and Natural Gas Monitor with Digital Display, Home Safety Alert Device for Kitchen, Garage, Office,1Pc
6-in-1 CO, Smoke, Gas Detector - Portable Plug-in Safety Device with Built-in Battery, High-Precision Sensors, 85dB Alarm, and Rotatable Color Screen for Home, RV, Hotel, and Travel Use Black From $22.39
From$2239
6-in-1 CO, Smoke, Gas Detector - Portable Plug-in Safety Device with Built-in Battery, High-Precision Sensors, 85dB Alarm, and Rotatable Color Screen for Home, RV, Hotel, and Travel Use Black
Veevvio Handheld 3-in-1 Carbon Monoxide Detector, Temperature & Humidity Monitor – Portable Electrochemical CO Sensor Alarm for Home, Travel, Car, Apartment – Air Quality Tester $29.99
Sponsored
$2999
current price $29.99Veevvio Handheld 3-in-1 Carbon Monoxide Detector, Temperature & Humidity Monitor – Portable Electrochemical CO Sensor Alarm for Home, Travel, Car, Apartment – Air Quality Tester
75 out of 5 Stars. 7 reviews
Save with
CAZONER Natural Gas Detector & Propane Detector, 10-Year Lifespan, Gas Leak Sensor for LPG, LNG, Home Kitchen RV Methane & Propane Alarm, LCD Screen $32.98
Sponsored
$3298
current price $32.98CAZONER Natural Gas Detector & Propane Detector, 10-Year Lifespan, Gas Leak Sensor for LPG, LNG, Home Kitchen RV Methane & Propane Alarm, LCD Screen
54.2 out of 5 Stars. 5 reviews
Save with
Flash Deal 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
Save with
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
Save with
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) $37.99
$3799
current price $37.99Natural Gas Detector CH4, Combustible Gas Methane Alarm Battery Powered with Light & Audible Indicator,Gas Monitor Sensor for Home RV Kitchen Apartment Safety (Battery included)
114.3 out of 5 Stars. 11 reviews
Save with
Clearance Rirool Natural Gas Detector with Digital Display, 85dB Alarm, Plug-in Gas Leak Sensor for Home, Kitchen, Restaurant, Hotel, School, Warehouse Safety Monitor $17.66 Was $24.99
Now$1766
current price Now $17.66, Was $24.99$24.99
Rirool Natural Gas Detector with Digital Display, 85dB Alarm, Plug-in Gas Leak Sensor for Home, Kitchen, Restaurant, Hotel, School, Warehouse Safety Monitor
314.8 out of 5 Stars. 31 reviews
Save with
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
Save with
CAZONER Natural Gas Detector & Propane Detector, 10-Year Lifespan, Gas Leak Sensor for LPG, LNG, Home Kitchen RV Methane & Propane Alarm, LCD Screen $32.98
$3298
current price $32.98CAZONER Natural Gas Detector & Propane Detector, 10-Year Lifespan, Gas Leak Sensor for LPG, LNG, Home Kitchen RV Methane & Propane Alarm, LCD Screen
54.2 out of 5 Stars. 5 reviews
Save with
Industry Portable Carbon Monoxide Detector Gas Analyzer CO Meter Monitor Measuring 0-1000PPM Sound And Light Vibration $132.01
$13201
current price $132.01Industry Portable Carbon Monoxide Detector Gas Analyzer CO Meter Monitor Measuring 0-1000PPM Sound And Light Vibration
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
1904 out of 5 Stars. 190 reviews
Save with
CAZONER Natural Gas Detector & Propane Detector, 10-Year Lifespan, Gas Leak Sensor for LPG, LNG, Home Kitchen RV Methane & Propane Alarm, LCD Screen $32.99
Sponsored
$3299
current price $32.99CAZONER Natural Gas Detector & Propane Detector, 10-Year Lifespan, Gas Leak Sensor for LPG, LNG, Home Kitchen RV Methane & Propane Alarm, LCD Screen
Save with
CAZONER Natural Gas Detector & Propane Detector, 10-Year Lifespan, Gas Leak Sensor for LPG, LNG, Home Kitchen RV Methane & Propane Alarm, LCD Screen $32.99
Sponsored
$3299
current price $32.99CAZONER Natural Gas Detector & Propane Detector, 10-Year Lifespan, Gas Leak Sensor for LPG, LNG, Home Kitchen RV Methane & Propane Alarm, LCD Screen
Save with
Explosion-Proof Natural Gas Detector - Ultra-Sensitive CH4/Propane Gas Leak Alert with 85dB Siren & Strobe Light, $36.99
$3699
current price $36.99Explosion-Proof Natural Gas Detector - Ultra-Sensitive CH4/Propane Gas Leak Alert with 85dB Siren & Strobe Light,
54.6 out of 5 Stars. 5 reviews
Save with
SW-723 Gas Detector Carbon Dioxide CO2 Monitor Alarm 9999 PPM Sensor Professional Carbon Dioxide Tester Device CO Meter $213.51
$21351
current price $213.51SW-723 Gas Detector Carbon Dioxide CO2 Monitor Alarm 9999 PPM Sensor Professional Carbon Dioxide Tester Device CO Meter
TripleHBB 6-in-1 Combustible Gas Detector,Gas Detector 6 in 1 CO Smoke Combustible Alarm Plug In with LCD Display for Home RV Camping From $31.85
From$3185
TripleHBB 6-in-1 Combustible Gas Detector,Gas Detector 6 in 1 CO Smoke Combustible Alarm Plug In with LCD Display for Home RV Camping
SITERWELL Portable Plug in Carbon Monoxide (CO)Detector 10 Year Battery,Electrochemical,Sound Warning, AC Powered for Home Office Travel,2 pack From $39.99
4 options
Available in additional 4 optionsFrom$3999
SITERWELL Portable Plug in Carbon Monoxide (CO)Detector 10 Year Battery,Electrochemical,Sound Warning, AC Powered for Home Office Travel,2 pack
494.5 out of 5 Stars. 49 reviews
Save with
Veevvio Handheld 3-in-1 Carbon Monoxide Detector, Temperature & Humidity Monitor Portable Electrochemical CO Sensor Alarm for Home, Travel, Car, Apartment Air Quality Tester $29.99
$2999
current price $29.99Veevvio Handheld 3-in-1 Carbon Monoxide Detector, Temperature & Humidity Monitor Portable Electrochemical CO Sensor Alarm for Home, Travel, Car, Apartment Air Quality Tester
75 out of 5 Stars. 7 reviews
Save with
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
3424.5 out of 5 Stars. 342 reviews
Save with
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
4294.2 out of 5 Stars. 429 reviews
Save with
4-in-1 CO & Gas Detector with HD Digital Display, Temperature & Humidity Monitor, Portable Safety Alarm Sensor for Home, RV, Hotel & Camping (Black) Was $32.00
4-in-1 CO & Gas Detector with HD Digital Display, Temperature & Humidity Monitor, Portable Safety Alarm Sensor for Home, RV, Hotel & Camping (Black)
13 out of 5 Stars. 1 reviews
50+ bought since yesterday Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Voice Alerts From $49.96
Sponsored
From$4996
Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Voice Alerts
3424.5 out of 5 Stars. 342 reviews
Save with
Kidde 10-Year Sealed Lithium Battery-Operated Combination Smoke & Carbon Monoxide Detector From $60.00
Sponsored
From$6000
Kidde 10-Year Sealed Lithium Battery-Operated Combination Smoke & Carbon Monoxide Detector
4294.2 out of 5 Stars. 429 reviews
Save with
Digital Carbon Monoxide Meter CO Gas leak Detector Gas Analyzer High Precision Smoke Leak Detector Gas Monitor Tester 1000ppm
Digital Carbon Monoxide Meter CO Gas leak Detector Gas Analyzer High Precision Smoke Leak Detector Gas Monitor Tester 1000ppm
3-in-1 CO Detector, Handheld Carbon Monoxide Sensor with CO2 Concentration, Temperature & Humidity Monitor, Natural Gas & Smoke Alarm for Home Apartment Hotel Camping RV
3-in-1 CO Detector, Handheld Carbon Monoxide Sensor with CO2 Concentration, Temperature & Humidity Monitor, Natural Gas & Smoke Alarm for Home Apartment Hotel Camping RV
15 out of 5 Stars. 1 reviews
First Alert GC01CN Combo Explosive Gas and Carbon Monoxide Alarm with Digital Display, 1039760PT $50.45 $59.35/ea
$5045
current price $50.45$59.35/ea
First Alert GC01CN Combo Explosive Gas and Carbon Monoxide Alarm with Digital Display, 1039760PT
164.9 out of 5 Stars. 16 reviews
Save with
4 in 1 Gas Detector SKZ1050C-CO/H2S/O2/EX gas detector alarm $865.13
$86513
current price $865.134 in 1 Gas Detector SKZ1050C-CO/H2S/O2/EX gas detector alarm
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
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
Save with
Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Batteries Included From $49.97
2 options
Available in additional 2 optionsFrom$4997
Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Batteries Included
2184.6 out of 5 Stars. 218 reviews
Save with
Multi Gas Detector O2 H2S CO LEL 4 in 1 Gas Meter Oxygen Hydrogen Sulfide Carbon Monoxide Combustible Gas Leak Detector From $211.68
From$21168
Multi Gas Detector O2 H2S CO LEL 4 in 1 Gas Meter Oxygen Hydrogen Sulfide Carbon Monoxide Combustible Gas Leak Detector
2024 Advanced 4 in 1 Gas Detector – Multi-Function Air Quality Monitor with CO, CO₂, Temperature & Humidity Sensors, Built-in Flashlight & Magnetic Mount
2024 Advanced 4 in 1 Gas Detector – Multi-Function Air Quality Monitor with CO, CO₂, Temperature & Humidity Sensors, Built-in Flashlight & Magnetic Mount
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
20 Pack LCD Display CO Carbon Monoxide Gas Detector Device Home Safety Alarm Detector From $120.99
From$12099
20 Pack LCD Display CO Carbon Monoxide Gas Detector Device Home Safety Alarm Detector
Save with
FACEGA Mini Carbon Monoxide Detector 0-999ppm Portable CO Gas Detector LCD Display Handheld Smoke Carbon Monoxide Monitor Battery Operated Carbon Monoxide Alarm Sensor for Hotel Dorm RV $15.84
$1584
current price $15.84FACEGA Mini Carbon Monoxide Detector 0-999ppm Portable CO Gas Detector LCD Display Handheld Smoke Carbon Monoxide Monitor Battery Operated Carbon Monoxide Alarm Sensor for Hotel Dorm RV
Handheld Portable High Precision 4-in-1 Gas Detector - Combustible & Toxic Hazardous Gas Meter O2 CO H2S Analyzer Rechargeable From $113.14
From$11314
Handheld Portable High Precision 4-in-1 Gas Detector - Combustible & Toxic Hazardous Gas Meter O2 CO H2S Analyzer Rechargeable
Handheld Carbon Monoxide Meter Portable CO Gas Leak Detector Gas Analyzer High Precision Detector De Gas Monitor Tester 1000ppm $82.70
$8270
current price $82.70Handheld Carbon Monoxide Meter Portable CO Gas Leak Detector Gas Analyzer High Precision Detector De Gas Monitor Tester 1000ppm
Digital 4-in-1 Gas Detector Oxygen (O2) Hydrogen Sulfide (H2S) Carbon Monoxide (CO) Combustible Gas LEL Monitor Gas Analyzer $134.85
$13485
current price $134.85Digital 4-in-1 Gas Detector Oxygen (O2) Hydrogen Sulfide (H2S) Carbon Monoxide (CO) Combustible Gas LEL Monitor Gas Analyzer
Pump Multi Gas Detector Gas Meter O2 H2S CO LEL 4 In 1 Oxygen Hydrogen Sulfide Carbon Monoxide Leak Detector
Pump Multi Gas Detector Gas Meter O2 H2S CO LEL 4 In 1 Oxygen Hydrogen Sulfide Carbon Monoxide Leak Detector
Veevvio Handheld 3-in-1 Carbon Monoxide Detector, Temperature & Humidity Monitor Portable Electrochemical Sensor Alarm for Home, Travel, Car, Apartment Air Quality Tester $29.99 Was $39.99
Now$2999
current price Now $29.99, Was $39.99$39.99
Veevvio Handheld 3-in-1 Carbon Monoxide Detector, Temperature & Humidity Monitor Portable Electrochemical Sensor Alarm for Home, Travel, Car, Apartment Air Quality Tester
95 out of 5 Stars. 9 reviews
Save with
4-in-1 Portable Gas Detector, Multi-Gas Monitor with CO, Humidity, Temperature Alarm, 3.18 x 1.84in Gas Analyzer for Home, Camping From $24.81
From$2481
4-in-1 Portable Gas Detector, Multi-Gas Monitor with CO, Humidity, Temperature Alarm, 3.18 x 1.84in Gas Analyzer for Home, Camping
Popular in Gas Sensor Co
Related Products
Siterwell AA Battery Operated Carbon Monoxide Detector Alarm, LCD Display,Portable for Travel Home,1-pack
Siterwell AA Battery Operated Carbon Monoxide Detector Alarm, LCD Display,Portable for Travel Home,1-pack$25.99current price $25.99SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.1 pack
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.1 pack$39.99current price $39.99Airthings 2950 Smart Radon Detector - White
Airthings 2950 Smart Radon Detector - White$99.99current price $99.99SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Bilingual Voice Alerts for Bedroom, UL217-9th , 2 Packs
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Bilingual Voice Alerts for Bedroom, UL217-9th , 2 Packs$47.99current price $47.99TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel
TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel$41.39current price $41.39Electronic Alarm, Alarm, Continuous, 12 to 24V AC/DC, 0 to 105dB, ABS Plastic, Black, Surface Mount
Electronic Alarm, Alarm, Continuous, 12 to 24V AC/DC, 0 to 105dB, ABS Plastic, Black, Surface Mount$229.89current price $229.89Buzzer, Buzzer, Pulse, 115 to 230V AC, 80 dB, Fiberglass, Black, Wall Mount 10701060
Buzzer, Buzzer, Pulse, 115 to 230V AC, 80 dB, Fiberglass, Black, Wall Mount 10701060$80.03current price $80.03INTBUYING 4-20mA Smart Water Level Sensor Pressure Transducer Pressure Range 0-30M
INTBUYING 4-20mA Smart Water Level Sensor Pressure Transducer Pressure Range 0-30M$119.00current price $119.00Bea Active Infrared Sensor for Request 10R2E-100
Bea Active Infrared Sensor for Request 10R2E-100$180.99current price $180.99First Alert Hardwired Smoke Alarm with Battery Backup 6 PACK
First Alert Hardwired Smoke Alarm with Battery Backup 6 PACK$109.99current price $109.99TONAIN 90 dB, White Magnetic Household Sensors & Alarms
TONAIN 90 dB, White Magnetic Household Sensors & Alarms$4.48current price $4.48Leak Alert Electronic Water Detector Flood Sensor Alarm
Leak Alert Electronic Water Detector Flood Sensor Alarm$14.99current price $14.99Fire Alarm Being Activated Poster Print - 18 x 24 in.
Fire Alarm Being Activated Poster Print - 18 x 24 in.$40.25current price $40.25