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Resold GeneratorsResold Generators & Power StationsSafety Equipment and GearToolsAlarm SystemsAll Home SecurityBathroom PlumbingCarbon Monoxide AlarmsCommercial LightingEmergency SuppliesFire SafetyFireplacesFirst AlertHome SafetyHome Safety by BrandHVAC Ducting and VentilationKiddeKitchen PlumbingPersonal PreparednessSafety DetectorsShop Plumbing BrandsStorm & Flood PrepSurveillanceWater HeatersWater Heaters, Pumps & TanksWildfire Prep
Gas Sensor Co(155)
Uses item details. Price when purchased online
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
2854.5 out of 5 Stars. 285 reviews
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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
3834.2 out of 5 Stars. 383 reviews
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Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Batteries Included From $49.97
Sponsored
From$4997
Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Batteries Included
1974.6 out of 5 Stars. 197 reviews
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50+ bought since yesterday Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch From $65.00
Sponsored
From$6500
Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch
2564.4 out of 5 Stars. 256 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
15 out of 5 Stars. 1 reviews
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Fixed Single Gas Detector, O2, H2S, CO, EX; Combustible Gas Detector High-precision Sensor,w LED Alarm
Fixed Single Gas Detector, O2, H2S, CO, EX; Combustible Gas Detector High-precision Sensor,w LED Alarm
First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display $50.45 Was $68.99
Now$5045
current price Now $50.45, Was $68.99$68.99
First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display
864.3 out of 5 Stars. 86 reviews
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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 $22.49
2 options
Available in additional 2 optionsFrom$2249
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
494.6 out of 5 Stars. 49 reviews
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5-in-1 CO, Smoke & Gas Detector with Temp & Humidity Display Plug-in & Backup $43.46
$4346
current price $43.465-in-1 CO, Smoke & Gas Detector with Temp & Humidity Display Plug-in & Backup
Macurco Gas Detector,CO,LED,0 to 200 ppm CM-6 $531.85 Was $574.45
Now$53185
current price Now $531.85, Was $574.45$574.45
Macurco Gas Detector,CO,LED,0 to 200 ppm CM-6
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
11 out of 5 Stars. 1 reviews
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Flash Deal TOPTES 4 in 1 Gas Leak Detector Guard-101 ,Gas Monitor for H2S, CO, LEL and O2, Vibration, Audible and Visual Alerts, Long Battery Life for Work and Home $85.99 Was $109.99
Sponsored
Now$8599
current price Now $85.99, Was $109.99$109.99
TOPTES 4 in 1 Gas Leak Detector Guard-101 ,Gas Monitor for H2S, CO, LEL and O2, Vibration, Audible and Visual Alerts, Long Battery Life for Work and Home
45 out of 5 Stars. 4 reviews
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EchoCheck Smart Propane Gas Tank Sensor $39.99
$3999
current price $39.99EchoCheck Smart Propane Gas Tank Sensor
404.1 out of 5 Stars. 40 reviews
Flash Deal 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 $15.99 Was $27.99
Now$1599
current price Now $15.99, Was $27.99$27.99
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
2494.4 out of 5 Stars. 249 reviews
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4-in-1 Gas Detector, CO and Natural Gas Monitor with Digital Display, Home Safety Alert Device for Kitchen, Garage, Office - White
4-in-1 Gas Detector, CO and Natural Gas Monitor with Digital Display, Home Safety Alert Device for Kitchen, Garage, Office - White
Shelly Wi-Fi Gas Sensor (Gas LPG) $49.99
$4999
current price $49.99Shelly Wi-Fi Gas Sensor (Gas LPG)
11 out of 5 Stars. 1 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) $29.99 Was $49.99
Now$2999
current price Now $29.99, Was $49.99$49.99
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)
25 out of 5 Stars. 2 reviews
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Clearance 5-in-1 Gas Temperature and Humidity Detector – CO2, TVOC, CO Monitor with Alarm, Indoor Air Quality Sensor for Home and Office From $11.35
From$1135
5-in-1 Gas Temperature and Humidity Detector – CO2, TVOC, CO Monitor with Alarm, Indoor Air Quality Sensor for Home and Office
11 out of 5 Stars. 1 reviews
Portable Combustible Gas Detector Leakage CO Methane Natural Gas Sensor Alarm Meter $25.99
$2599
current price $25.99Portable Combustible Gas Detector Leakage CO Methane Natural Gas Sensor Alarm Meter
Flash Deal Rirool Natural Gas Detector with Digital Display, 85dB Alarm, Plug-in Gas Leak Sensor for Home, Kitchen, Restaurant, Hotel, School, Warehouse Safety Monitor $13.99 Was $17.99
Now$1399
current price Now $13.99, Was $17.99$17.99
Rirool Natural Gas Detector with Digital Display, 85dB Alarm, Plug-in Gas Leak Sensor for Home, Kitchen, Restaurant, Hotel, School, Warehouse Safety Monitor
214.7 out of 5 Stars. 21 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) $29.99 Was $49.99
Sponsored
Now$2999
current price Now $29.99, Was $49.99$49.99
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)
25 out of 5 Stars. 2 reviews
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Carbon Monoxide Meter CO Detector CO Gas Leak Detector Gas Analyzer $31.99
Sponsored
$3199
current price $31.99Carbon Monoxide Meter CO Detector CO Gas Leak Detector Gas Analyzer
15 out of 5 Stars. 1 reviews
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Flash Deal TOPTES 4 in 1 Gas Leak Detector Guard-101 ,Gas Monitor for H2S, CO, LEL and O2, Vibration, Audible and Visual Alerts, Long Battery Life for Work and Home $85.99 Was $109.99
Now$8599
current price Now $85.99, Was $109.99$109.99
TOPTES 4 in 1 Gas Leak Detector Guard-101 ,Gas Monitor for H2S, CO, LEL and O2, Vibration, Audible and Visual Alerts, Long Battery Life for Work and Home
45 out of 5 Stars. 4 reviews
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2026 Camping 4-in-1 CO & Combustible Gas Detector Plug In Safety Alarm Outdoor RV Hotel Safety Equipment,Black+White,4.3Inch
2026 Camping 4-in-1 CO & Combustible Gas Detector Plug In Safety Alarm Outdoor RV Hotel Safety Equipment,Black+White,4.3Inch
Tuya Wifi Natural Gas-Sensor Household Intelligent Combustible Gas-Alarm Detector Gas-Leakage Sensor Compatible with Assistant $21.99
$2199
current price $21.99Tuya Wifi Natural Gas-Sensor Household Intelligent Combustible Gas-Alarm Detector Gas-Leakage Sensor Compatible with Assistant
4-in-1 Portable Gas Detector, Multi-Gas Monitor with CO, Humidity, Temperature Alarm, 3.18 x 1.84in Gas Analyzer for Home, Camping
4-in-1 Portable Gas Detector, Multi-Gas Monitor with CO, Humidity, Temperature Alarm, 3.18 x 1.84in Gas Analyzer for Home, Camping
50+ bought since yesterday Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Voice Alerts
2 options
Available in additional 2 optionsKidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Voice Alerts
2854.5 out of 5 Stars. 285 reviews
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Wifi Natural Gas Sensor Tuya Smart Alarm Gas Leakage Detector Fire Security Digital LCD Temperature Display $21.66
$2166
current price $21.66Wifi Natural Gas Sensor Tuya Smart Alarm Gas Leakage Detector Fire Security Digital LCD Temperature Display
15 out of 5 Stars. 1 reviews
Macurco Fixed Gas Detector,CO,4-1/2in.Hx4in.W CM-12 $660.64
$66064
current price $660.64Macurco Fixed Gas Detector,CO,4-1/2in.Hx4in.W CM-12
CO Gas Detectors for Household Use Kitchen Garage Leakage Monitoring System
CO Gas Detectors for Household Use Kitchen Garage Leakage Monitoring System
Flash Deal 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 $15.99 Was $27.99
Sponsored
Now$1599
current price Now $15.99, Was $27.99$27.99
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
2494.4 out of 5 Stars. 249 reviews
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VEVOR Carbon Dioxide Monitor, CO2 Controller with Temperature and Humidity Display, NDIR Sensor, CO2 Sensor for Outdoors, Home, Office, Car, Lightweight & Portable $35.83
Sponsored
$3583
current price $35.83VEVOR Carbon Dioxide Monitor, CO2 Controller with Temperature and Humidity Display, NDIR Sensor, CO2 Sensor for Outdoors, Home, Office, Car, Lightweight & Portable
43.5 out of 5 Stars. 4 reviews
4in1 Gas Detector for CO, H2S, O2, LEL Detection Long Battery Life Multi-Alarm System Portable Design $94.45
$9445
current price $94.454in1 Gas Detector for CO, H2S, O2, LEL Detection Long Battery Life Multi-Alarm System Portable Design
GJX 2026 New Natural Gas Detector Alarm, Wi-Fi Smart App, Propane Leak Monitor for Home, Kitchen, Camper, Trailer, Rv. Plug-In Gas Leak Sensor for Lpg, Lng, Methane & Butane Gases $22.56
$2256
current price $22.56GJX 2026 New Natural Gas Detector Alarm, Wi-Fi Smart App, Propane Leak Monitor for Home, Kitchen, Camper, Trailer, Rv. Plug-In Gas Leak Sensor for Lpg, Lng, Methane & Butane Gases
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
4-in-1 Detector with HD Screen Camping CO Combustible Gas Detector Plug In RV Hotel Outdoor Safety,Black
4-in-1 Detector with HD Screen Camping CO Combustible Gas Detector Plug In RV Hotel Outdoor Safety,Black
Safe-T-Alert. 85-741-WT-TR, 85 Series Universal Dual CO/LP Detector with Trim Ring, White $59.32 $59.32/count
$5932
current price $59.32$59.32/count
Safe-T-Alert. 85-741-WT-TR, 85 Series Universal Dual CO/LP Detector with Trim Ring, White
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GJX 1Pc Handheld Carbon Monoxide Detector Co Detector With Digital Lcd Display Natural Gas Alarm Co Gas Tester Monitor Detector $15.90
$1590
current price $15.90GJX 1Pc Handheld Carbon Monoxide Detector Co Detector With Digital Lcd Display Natural Gas Alarm Co Gas Tester Monitor Detector
15 out of 5 Stars. 1 reviews
Pohot Gas Leak Sensor Sound Alarm WiFi Natural Gas Detector USB Type-C Power Multifunctional for LPG Gas Biogas Methane
Pohot Gas Leak Sensor Sound Alarm WiFi Natural Gas Detector USB Type-C Power Multifunctional for LPG Gas Biogas Methane
SITERWELL Portable Plug in Carbon Monoxide (CO)Detector 10 Year Battery,Electrochemical,Sound Warning, AC Powered for Home Office Travel,2 pack From $51.19
3 options
Available in additional 3 optionsFrom$5119
SITERWELL Portable Plug in Carbon Monoxide (CO)Detector 10 Year Battery,Electrochemical,Sound Warning, AC Powered for Home Office Travel,2 pack
274.4 out of 5 Stars. 27 reviews
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Carbon Monoxide Meter CO Detector CO Gas Leak Detector Gas Analyzer $31.99
$3199
current price $31.99Carbon Monoxide Meter CO Detector CO Gas Leak Detector Gas Analyzer
15 out of 5 Stars. 1 reviews
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4-in-1 CO & Gas Detector with HD Digital Display, Temperature & Humidity Monitor, Portable Safety Alarm Sensor for Home, RV, Hotel & Camping (White)
4-in-1 CO & Gas Detector with HD Digital Display, Temperature & Humidity Monitor, Portable Safety Alarm Sensor for Home, RV, Hotel & Camping (White)
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
1894 out of 5 Stars. 189 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 $59.99
$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
11 out of 5 Stars. 1 reviews
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Portable CO & O2 Gas Detector with Upgraded Electrochemical Sensor, Altitude & Barometric Pressure 5-in-1 Rechargeable Metal Monitor for RV, Garage, Camping & Outdoor Use $88.50
$8850
current price $88.50Portable CO & O2 Gas Detector with Upgraded Electrochemical Sensor, Altitude & Barometric Pressure 5-in-1 Rechargeable Metal Monitor for RV, Garage, Camping & Outdoor Use
Carbon Monoxide Detectors, Portable CO Detector Battery Powered, Handheld Carbon Monoxide Monitor Alarm Detector with LCD Display for Home/Outdoor/Travel $33.92
$3392
current price $33.92Carbon Monoxide Detectors, Portable CO Detector Battery Powered, Handheld Carbon Monoxide Monitor Alarm Detector with LCD Display for Home/Outdoor/Travel
1Pc Handheld Carbon Monoxide Detector Co Detector With Digital Lcd Display Natural Gas Alarm Co Gas Tester Monitor Detector
1Pc Handheld Carbon Monoxide Detector Co Detector With Digital Lcd Display Natural Gas Alarm Co Gas Tester Monitor Detector
3-in-1 CO Detector, Temperature & Humidity Monitor for Kitchen & Garage – Portable Alarm Sensor with LED Display, Home Safety Alert From $16.47
From$1647
3-in-1 CO Detector, Temperature & Humidity Monitor for Kitchen & Garage – Portable Alarm Sensor with LED Display, Home Safety Alert
Mastercool Combustible gas detector $200.88
$20088
current price $200.88Mastercool Combustible gas detector
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Test Products International Combustible Gas Detector, 32 to 104F 721 $337.77
$33777
current price $337.77Test Products International Combustible Gas Detector, 32 to 104F 721
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