129 carbon dioxide alarm on offer(Disclaimer)
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➤ Last checked on 11.10.2026
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75% discount
Extech CO240 - Indoor Air Quality Meter - Handheld CO₂, Temperature, Humidity, Dew Point & Wet Bulb Monitor with Audible Alarm
Comprehensive Air Quality Monitoring - Measures CO2 concentration, air temperature, relative humidity, dew point, and wet bulb temperature for complete indoor environmental assessment.
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39% discount
First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm
First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
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42% discount
Extech CO100 Air Quality Carbon Dioxide Monitor
Checks for Carbon Dioxide (CO2) concentrations
Only:
62hrs
31min
51sec
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31% discount
First Alert Battery Carbon Monoxide Alarm with Digital Display
Keep your family safe with this easy to use digital display, battery operated carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
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First Alert 1039734 Fat Plug-in Carbon Monoxide Alarm with Battery Backup, 8.50" x 6.75" x 2.25"
Alerts to dangerous Carbon monoxide levels
see shop
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First Alert Battery Combination Smoke & Carbon Monoxide Alarm
First Alert BRK Precision Detection advanced sensing technology reduces cooking nuisance alarms and delivers early warning
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28% discount
First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm
First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
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16% discount
X-Sense Smoke & Carbon Monoxide Alarm, SC06, 1-Pack
10-Year Battery-Operated Smoke and CO Detector: A sealed lithium battery enables the unit to keep you and your family safe and sound for up to a decade with no need to replace batteries frequently; a low battery warning lets you know the unit is coming to its end of life
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20% discount
Heiman Smart Carbon Monoxide Detectors, Matter Over Thread CO Alarm, C1-M
Trusted Protection, Recognized Excellence — UL 2034 (5th Ed.) Certified and CSFM Approved for dependable residential CO safety. This co detector, is the Winner of the Red Dot Design Award, delivering reliable performance in a sleek, modern form.
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18% discount
First Alert Hardwire Smoke Alarm with 10-Year Battery Backup
First Alerts Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
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14% discount
X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 1-Pack
Please Note: SC07 is a basic standalone unit; it does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station; for interconnection, search for SC07-W
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17% discount
First Alert Hardwire Combination Smoke & Carbon Monoxide Alarm
First Alerts Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
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14% discount
SITERWELL Plug in Carbon Monoxide Detector 10 Year Battery&AC Powered,
SITERWELL
Only:
16hrs
16min
51sec
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16% discount
X-Sense Smoke & Carbon Monoxide Alarm, SC06, 5-Pack
Please Note: SC06 is a basic standalone unit; it does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station; for interconnection, search for SC06-W
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15% discount
Kidde KN-COB-B-LP Nighthawk Carbon Monoxide Alarm, Battery Operated - 21007268
Battery operated (three AAs included) to provide protection during power outages
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12% discount
X-Sense Interconnected Smoke and CO Detector Combo, SC01-W, 6-Pack
10-Year Sealed Battery: Contains a long-life lithium battery that powers the device for its entire 10-year life
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11% discount
Kidde Carbon Monoxide Detector, 10-Year Battery Powered, Digital Display, LED Status Indicators, 85 dB Alarm, 3rd Edition
Electrochemical sensor technology detects CO gas & sounds an 85-decibel alarm
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13% discount
First Alert Battery Combination Smoke & Carbon Monoxide Alarm
First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
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11% discount
X-Sense Smoke Detector and Carbon Monoxide Detector, SC01, 5-Pack
Please Note: SC01 is a basic standalone unit; it does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station; for interconnection, search for SC01-W
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11% discount
X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 5-Pack
Please Note: SC07 is a basic standalone unit; it does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station; for interconnection, search for SC07-W. For Wi-Fi functionality, look for SC07-WX or SC07-MR
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13% discount
X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 3-Pack
Please Note: The SC07 is a basic standalone unit. It does not support wireless interconnection, Wi-Fi, or base station connection; for wireless interconnection, search for SC07-W
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11% discount
X-Sense 6-Pack Interconnected Smoke and CO Detector, SC06-W
Please Note: SC06-W supports wireless interconnection but does not have Wi-Fi
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13% discount
X-Sense Smoke & Carbon Monoxide Alarm, SC06, 3-Pack
Please Note: The SC06 is a basic standalone unit. It does not support wireless interconnection, Wi-Fi, or base station connection; for wireless interconnection, search for SC06-W
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10% discount
Rechargeable CO2 Alarm Travel/Camping Carbon Dioxide Warning With Temperature/Humidity Display Portable CO2 Meter
Suitable for various, this CO2 detector is essential for anyone concerned about air Stay awares of potential carbon dioxide risks in different settings.
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10% discount
Heiman Smoke Detector Carbon Monoxide Detector Combo 10-Year Sealed Battery
【2-in-1 Dual Sensor Protection for Comprehensive Defense】Streamline your home safety setup with smart dual-function monitoring. This advanced smoke detector carbon monoxide detector combo 10 year sealed battery device tracks both slow-smoldering fire hazards and toxic air threats. Perfect for an open kitchen, residential bedroom, or newly built house, this high-accuracy smoke and carbon monoxide detector delivers advanced 24/7 protection.
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7% discount
Klein Tools ET110 CO Meter with Exposure Limit Alarm
ACCURATE CO GAS MEASUREMENT: Detect and measure carbon monoxide gas levels with precision using our easy-to-use CO meter
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8% discount
First Alert Battery Combination Smoke & Carbon Monoxide Alarm
First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
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12% discount
X-Sense Interconnected Smoke and CO Detector, SC07-W, 6-Pack
Please Note: The SC07-W supports wireless interconnection but does not have Wi-Fi
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8% discount
Siterlink Carbon Monoxide Detectors Plug in,10 Year Replaceable Battery
siterlink
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12% discount
X-Sense Smoke Detector and Carbon Monoxide Detector, SC01, 1-Pack
Please Note: SC01 is a basic standalone unit; it does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station; for interconnection, search for SC01-W
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10% discount
X-Sense Smoke Detector Carbon Monoxide Alarm Combo, XP0H-SN, 1-Pack
Please Note: The XP0H-SN is a basic standalone unit; does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station; for an interconnected version, search for XP0H-WN
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10% discount
X-Sense Interconnected Smoke and CO Detector Combo, SC01-W, 3-Pack
Please Note: SC01-W supports wireless interconnection but does not have Wi-Fi
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Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 1 Pack
2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device
free delivery
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6% discount
FIRST ALERT SC9120B Corded Electric Combination Alarm with Adapter Plugs for Easy Replacement
Convenient adapter plugs makes it easy to replace existing hardwired alarms without needing to rewire
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Amprobe CO2-100 Handheld Carbon Dioxide Meter
Handheld digital meter measures ambient level of carbon dioxide (CO2) to monitor indoor air quality and performance of heating, ventilation, and air-conditioning systems
free delivery
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10% discount
X-Sense Smoke Detector Carbon Monoxide Alarm Combo, XP0H-SN, 3-Pack
Please Note: The XP0H-SN is a basic standalone unit; does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station; for an interconnected version, search for XP0H-WN
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First Alert SC5 Battery Smart Smoke & Carbon Monoxide Alarm
Compatible with Google's Nest Protect Alarm
free delivery
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10% discount
X-Sense 3-Pack Interconnected Smoke and CO Detector, SC06-W
Please Note: SC06-W supports wireless interconnection but does not have Wi-Fi
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10% discount
X-Sense Smoke Detector and Carbon Monoxide Detector, SC01, 3-Pack
Please Note: SC01 is a basic standalone unit; it does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station; for interconnection, search for SC01-W
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First Alert SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack
Hardwired CO smoke alarm features battery backup for constant monitoring
free delivery
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Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 4 Pack
2-IN-1 DETECTION: Alerts you to both smoke & carbon monoxide (CO) using a single, cost-effective device.
free delivery
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8% discount
Supco IAQ50 CO2 Carbon Dioxide, Temperature, and Humidity Meter
INDOOR AIR QUALITY METER - The CO2 meter measures Carbon Dioxide levels, Temperature and Humidity with Dew Point and Wet Bulb. Use for continuous monitoring of residential, and professional environments, such as warehouses, restaurants, garages, and greenhouses.
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6% discount
Kidde Carbon Monoxide Detector, AA Battery-Powered, COBDL
DETECTS CARBON MONOXIDE: Model COBDL monitors CO and sounds a loud 85 dB alarm to signal evacuation to fresh air; LED warning light indicates hazard; Test/Hush button allows quick checks or temporary silencing
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First Alert Battery Combination Smoke & Carbon Monoxide Alarm
First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
free delivery
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First Alert Battery Combination Smoke & Carbon Monoxide Alarm
First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
free delivery
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First Alert Plug in Carbon Monoxide Alarm
Keep your family safe from carbon monoxide in multiple rooms with this convenient plug in carbon monoxide alarm 3 pack; The alarms work with any standard outlet and also have a battery backup for continuous monitoring of CO levels, even if there's a power failure
free delivery
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Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, Voice Alerts, LED Warning Light Indicators, 2 Pack
2-IN-1 DETECTION: Alerts you to both smoke & carbon monoxide (CO) using a single, cost-effective device.
free delivery
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Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, not wired, Voice Alerts, LED Warning Light Indicators
2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device
free delivery
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6% discount
HEIMAN Carbon Monoxide Detectors, Interconnected, UL2034 5th Ed, C1-R,3Pack
【Wireless Interconnected - Whole-Home Protection】 One Starts, All Sounds: No Wi-Fi required! The CO detector is different from traditional alarms; these devices "talk" to each other. When one alarm detects CO, every interconnected unit in your home will sound instantly(656 ft range/200 m). This ensures you hear the alert from any room, providing crucial extra seconds for your family to escape. (If you have Heiman other interconnected products, or a gateway, you can unify safety across rooms)
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First Alert Plug in Carbon Monoxide Alarm with Digital Display
Keep your family safe with this digital display, plug in carbon monoxide alarm; It works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there's a power failure
free delivery
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First Alert 10-Year Battery Carbon Monoxide Alarm with Digital Display
Keep your family safe with this easy to use digital-display, 10-year battery operated carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
free delivery
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Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery, 30CUD10, 1 Pack
2-in-1 DETECTION: Model 30CUD10 detects both smoke and carbon monoxide with advanced sensing technology engineered with over 25% faster smoke detection*; features a red LED light for clear visual notification suitable for homes
free delivery
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Kidde Smoke & Carbon Monoxide Detector, AA Battery-Powered, 30CUDR, 1 Pack
2-in-1 DETECTION: Model 30CUDR detects both smoke and carbon monoxide and features advanced sensing technology with over 25% faster smoke detection*; sounds a loud 85-decibel alarm with red LED light for clear visual warnings; suitable for homes
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FIRST ALERT BRK SC9120FF Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 pack , White
Keep your family safe with this hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure
free delivery
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Kidde Smoke & Carbon Monoxide Detector, AA Battery-Powered, 30CUDR, 3 Pack
2-in-1 DETECTION: Model 30CUDR detects both smoke and carbon monoxide and features advanced sensing technology with over 25% faster smoke detection*; sounds a loud 85-decibel alarm with red LED light for clear visual warnings; suitable for homes
free delivery
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Kidde Smoke & CO Detector, Hardwired & 10-Year Battery, 30CUA10, 1 Pack
2-IN-1 DETECTION: Detects both smoke and carbon monoxide with advanced sensing technology engineered for over 25% faster smoke detection*; features an 85-decibel alarm with red LED light for clear visual and audible warnings; suitable for homes
free delivery
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Kidde Smart Carbon Monoxide Detector & Indoor Air Quality Monitor, Plug-in, WiFi, Alexa Compatible Device, Voice & App Alerts
Industry First: 2-in-1 Detection - Carbon monoxide detector & Indoor Air Quality Monitor combo alerts you to both CO & indoor air quality hazards, in a single device
free delivery
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FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, White, Pack of 3
Keep your family safe with this 3-pack of hardwired smoke and carbon monoxide alarm; The battery backup means constant monitoring, even if there's a power failure
free delivery
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Kidde Smoke & CO Detector, Hardwired & AA Battery Backup, 30CUAR, 1 Pack
2-IN-1 DETECTION: Detects both smoke and carbon monoxide with advanced sensing technology for over 25% faster smoke detection*; features a loud 85-decibel alarm with red LED light for clear visual and audible warnings; suitable for homes
free delivery
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First Alert Battery Carbon Monoxide Alarm
Keep your family safe with this 3-Pack of easy to use, battery operated carbon monoxide alarms; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
free delivery
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Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable LED Warning Light Indicators, 4 Pack
2-IN-1 DETECTION: Alerts you to both smoke & carbon monoxide (CO) using a single, cost-effective device.
free delivery
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First Alert Hardwire Combination Smoke & Carbon Monoxide Alarm
BRK's Precision Detection advanced sensing technology reduces cooking nuisance alarms and delivers early warning
free delivery
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Kidde Ultra-Sensitive Carbon Monoxide Detector for Pets, Health, or Medical Conditions, Battery Powered with Digital Display, UNIT
Electrochemical sensor will detect low levels of CO (below 30 PPM) for family members or pets, specifically those who have medical conditions
free delivery
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7% discount
Heiman Carbon Monoxide Detectors, 10-Year Product Life CO Detector, 2-Pack
【10-Year Battery Life & Cost-Saving Protection】Say goodbye to annoying midnight battery chirps and expensive replacements. This 10 year battery carbon monoxide detector features a long-lasting lithium battery for non-stop 24/7 monitoring. Perfect for a busy landlord or homeowner, this carbon monoxide detector 10 year battery setup delivers dependable, budget-friendly defense without the hassle of hardwiring.
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Kidde Smoke & CO Detector, Hardwired & AA Battery Backup, 30CUAR, 3 Pack
2-IN-1 DETECTION: Detects both smoke and carbon monoxide with advanced sensing technology for over 25% faster smoke detection*; features a loud 85-decibel alarm with red LED light for clear visual and audible warnings; suitable for homes
free delivery
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Kidde Smart Smoke & CO Detector with Ring, AA Battery, RGCUDR-RW
Double the Detection: Alerts you to both smoke and carbon monoxide (CO)
free delivery
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Kidde Carbon Monoxide Detector, 10-Year Battery-Powered, COB10
DETECTS CARBON MONOXIDE: Model COB10 monitors CO and sounds a loud 85-decibel alarm to signal evacuation to fresh air; LED warning light indicates hazard; test/hush button allows quick checks or temporary silencing; replaces model C3010
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PT199 Natural Gas Leak Detector with Audible & Visual Alarm, Portable Gas Sniffer to Locate Combustible Sources Like Methane, Propane for Home(Includes Battery x2)-Orange
Combustible Gas Leak Detector: The TopTes PT199 detects natural gas, methane, propane, butane, LPG, and more, pinpointing leaks to reduce the risk of explosion, keeping your family and property safe
free delivery
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Heiman Carbon Monoxide Detectors, 10-Year Product Life CO Detector, C1-S
UL 2034 5th Ed. Certified, CSFM Approved, Red Dot Award-Winning: Rigorously tested to meet the latest UL 2034 5th Edition safety standard for reliable CO detection and officially approved by the California State Fire Marshal (CSFM). Also recognized with a Red Dot Award for standout design and innovation—ideal for modern homes and apartments.
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Heiman Smart Carbon Monoxide Detectors, Real-Time App Notifications, 2.4 GHz Wi-Fi, UL 2034 5th, Portable CO Detector Battery Powered/85 dB/Test Button, Small CO Alarm for Home Travel RV, 5-Pack
【Triple-Certified Safety】: ETL Listed, UL2034 (the U.S. exclusive CO alarm standard), and FCC certifications, U.S. safety compliant,More reassuring for family use
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Kidde Smoke & CO Detector, AA Battery-Powered, 30CUDR-V, 1 Pack
2-IN-1 DETECTION: Detects both smoke and carbon monoxide with advanced sensing technology engineered for over 25% faster smoke detection*; features an 85-decibel alarm with red LED light for clear visual and audible warnings; suitable for homes
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Carbon Monoxide CO Meter by Forensics | USA NIST Calibration | Dust & Explosion Proof | USB Recharge | Sound, Light and Vibration Alarms | 0-1000 ppm |
ACCURATE: Carbon Monoxide (CO) gas detector, 0-1000ppm with 1ppm resolution. USA NIST Calibration.
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Siterlink Carbon Monoxide Detectors Plug in,10 Year Replaceable Battery
AC Plug-in with 10 Year Battery Backup:Enjoy the convenience of this CO detector that plugs into a standard outlet, utilizing AC power for continuous operation. In case of a power outage, the built-in 10 years battery backup ensures uninterrupted protection, keeping you safe even during unexpected blackouts.
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Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery, 30CUD10, 2 Pack
2-in-1 DETECTION: Model 30CUD10 detects both smoke and carbon monoxide with advanced sensing technology engineered with over 25% faster smoke detection*; features a red LED light for clear visual notification suitable for homes
free delivery
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Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators, 2 Pack
2-IN-1 DETECTION: Alerts you to both smoke & carbon monoxide (CO) using a single, cost-effective detector.
free delivery
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First Alert Battery Combination Smoke & Carbon Monoxide Alarm
First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
free delivery
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Kidde Smoke & Carbon Monoxide Detector, AA Battery-Powered, 30CUDR-VRF
2-IN-1 DETECTION WITH VOICE ALERTS: Model 30CUDR-VRF detects smoke and CO with advanced sensing technology for over 25% faster smoke detection*; announces "Fire" or "Warning, Carbon Monoxide" and sounds a loud 85-decibel alarm with red LED light
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CO2 Carbon Dioxide Air Quality Monitor, Pollution & Ventilation Meter, Tester; Detect & Test Indoor Air Ventilation Levels with CO2 PPM Levels, Temperature and Humidity Sensor Readings on LED Screen
CO2 PPM READINGS ON A LED DISPLAY – Assess the quality of your air and help keep air fresh in any indoor space with this CO2 meter with a highly readable 2.8" 320 x 240 resolution LED screen display.
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CO2 Monitor for Home CO2 Detector, Photoacoustic Sensor
CARBON DIOXIDE DETECTOR for HOME, SWITCH °C/°F – Great item for any home to monitor the weather and air quality! Real-time CO2 value, temperature and humidity, CO2 history chart, CO2 Concentration range, 3 Adjustable Volume for Alarm Setting & 3 Adjustable Backlight, Max/Min Data, Low battery indicator.
free delivery
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Kidde Carbon Monoxide Detector, AA Battery Powered, Portable for Travel or Home, 85 dB Alarm, LED Status Indicators, 3rd Edition, 6 Pack
Electrochemical sensor technology detects CO gas
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Heiman Carbon Monoxide Detectors, Interconnected, UL 2034 5th Ed, C1-R
【UL 2034 5th Ed. Certified & CSFM Approved】 Rigigorously tested and UL Listed to meet the latest UL 2034 5th Edition safety standards. This Heiman Carbon Monoxide Detectors is officially CSFM Approved (California State Fire Marshal), ensuring top-tier reliability for your family. Winner of the Red Dot Award, its sleek, modern design seamlessly blends into any home decor while providing professional-grade protection.
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Extech CO250 Portable Air Quality CO2 Meter with Datalogger
Accurate CO2 Monitoring - Measures carbon dioxide levels from 0 to 5,000 ppm using an advanced NDIR sensor for reliable indoor air quality testing
free delivery
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Kidde Smoke and Carbon Monoxide Detector, Hardwired with 10-Year Battery Backup, Voice Alerts, LED, 85 dB, 30CUA10-V, 1 Pack
2-IN-1 DETECTION: Detects both smoke and carbon monoxide with advanced sensing technology engineered with over 25% faster smoke detection*; features a loud 85-decibel alarm with red LED light for clear visual and audible warnings; suitable for homes
free delivery
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First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm
First Alert's Precision Detection advanced sensing technology complies with the latest industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency. Provides reliable 2-in-1 detection against both smoke and carbon monoxide.
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VETOUCH Plug in CO2 Detector Wall, 3-in-1 Air Quality Monitor CO2 Alarm, Digital Display CO2 Monitor, Household Temp Humidity Meter, Real-Time CO2 Level Sensor Alert for Home Office School Garage
【Plug & Play Instant Use】No complicated setup required, this plug in wall CO2 detector works immediately once plugged into wall outlet, seamlessly monitoring indoor CO2, temperature and humidity for home, office, school and garage in real time.
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Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery, 30CUD10-V, 1 Pack
2-IN-1 DETECTION: Detects both smoke and carbon monoxide with advanced sensing technology for over 25% faster smoke detection*; features an 85-decibel alarm with red LED light for clear visual and audible warnings; suitable for homes
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Carbon Dioxide CO2 Detector by Forensics | USA NIST Calibration | Water, Dust & Explosion Proof | USB Recharge| Adjustable Sound, Light & Vibration Alarms | 0-100% CO2 |
DETECT: Single-gas detector for Carbon Dioxide, 0-100% with 0.1% resolution. USA NIST Calibration. Turn ON and GO.
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Siterwell Travel Carbon Monoxide Detector 7 Year Product Life,
High Accuracy & Reliability: This carbon monoxide detector conforms to ETL standards and has a built-in advanced electrochemical sensor that detects dangerous CO levels more accurately and responds more quickly. In case of danger, the carbon monoxide detector gives an alarm of no less than 85dB to 3-meter, providing you the ultimate protection
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Air Quality Monitor Indoor 7.5" Display + Alerts, CO2 Monitor PM2.5 PM1.0 PM10 with TVOC Temperature Humidity for Home, Kitchen, Bedroom, Office, RV
Clear 7.48” Large Color Display – See Everything at a Glance. Our air quality monitor features a large, bright, and color-coded screen that is easy to read from across the room. It simultaneously displays real-time levels of CO2, PM2.5, PM1.0, PM10, TVOC, temperature, humidity, and date. No need to toggle or scroll through confusing menus. Three adjustable brightness ensures it’s clear in any light without being disruptive at night.
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TopTes Guard-533 Portable Carbon Monoxide Detector, CO Detector with Visual, Audible & Vibration Alarms, Back Clip Design, 120h Standby, Auto Record Storage, Safety Explosion-Proof for Home, Work Use
TOPTES
free delivery
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Siterlink Smoke Detector Carbon and Monoxide Detector Combo 1 Pack
SITERWELL
free delivery
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SITERWELL Smoke Detector Combo Smoke & Carbon Monoxide Alarm
SITERWELL
free delivery
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CO2 Controller Carbon Dioxide Controller CO2 Meter Monitor with Relay Function 4.5m Cable NDIR Carbon Dioxide Sensor Probe for Grow Room, Plant, Grow Tent, Greenhouse, Garden, Indoor
Accurate NDIR CO2 sensor: Uses nondispersive infrared sensor (NDIR) technology for most precise and reliable CO2 measurements.
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Kidde Carbon Monoxide + Explosive Gas, Natural Gas & Propane Alarm, Plug-in with 9V Battery Backup, Digital Display, 85 dB Alarm, LED Status Indicators, 3rd Edition
Easy Installation - simply plug-in to a standard, 120V outlet in your home
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INKBIRDPLUS Portable CO2 Detector, Mini Indoor CO2 Monitor, NDIR Sensor with Full Color LCD, for Home, Office, Travel (PTH-10C)
High-Quality CO2 Detector: This portable CO2 meter uses an advanced NDIR sensor to detect carbon dioxide through infrared sensing technology, with high precision, strong anti-interference and excellent stability
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Kidde Carbon Monoxide Detector, Plug-in & AA Battery Backup, COPD
DETECTS CARBON MONOXIDE: With backlit display that shows CO levels & sounds a loud 85 dB alarm when CO is detected to signal evacuation; sleep peacefully with no nighttime chirps; LED warning light indicates hazard; Test/Hush button for quick checks
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Portable CO2 Detector, 4-in-1 Carbon Dioxide Detector for Car with Audible & Visual Alerts, Temp/Humidity Sensor, Magnetic Back, 300H Standby – Ideal for Home, RV, Camping (Black)
[Handheld Carbon Monoxide Detector] This handheld carbon monoxide detector slips into any pocket for on‐the‐go protection. It delivers precise CO readings (0–1000ppm) on a crisp colour screen, with a 0.5s refresh rate. Weight: 105g. Perfect for home, caravan, or workshop.
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Heiman Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery
【MOUNT IT RIGHT. FEWER FALSE ALARMS】 Keep 10 ft from cooking (even open kitchens), 3 ft from A/C vents & bathroom doors, 4 in from walls. Wrong placement is a leading cause.
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Heiman Smoke Detector 10 Year Battery, photoelectric Smoke Alarm
【MOUNT IT RIGHT. FEWER FALSE ALARMS】Keep 10 ft from cooking (even open kitchens), 3 ft from A/C vents & bathroom doors, 4 in from walls. Wrong placement is a leading cause.
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7% discount
Kidde 21010073 Worry Free Carbon Monoxide Alarm for Living Area with 10 Year Sealed Lithium Battery
The Kidde C3010 is a sealed battery, carbon monoxide alarm that uses electro-chemical sensing technology to protect you and your family from the dangers of carbon monoxide
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Carbon Monoxide Detector, Temperature Display, 10-Year Battery
Multi-function, backlit digital display - view CO levels or ambient room temperature
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First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector (CO) with Battery Backup. 6-Pack , White
The First Alert Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup provides 2-in-1 protection from both types of dangers.
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TOPTES CT-580 Portable Carbon Monoxide Detector, Rechargeable CO Detector with Vibration, Visual & Audible Alarms, 0-1000PPM, TFT Color Display for Home, Camping, Travel, Industrial & Professional Use
Fast and Accurate: The TOPTES CT-580 Carbon Monoxide Detector is a manual inspection tool equipped with a high-sensitivity, high-accuracy DDS sensor providing a quick response within 0.3 seconds. It detects CO concentrations from 0 to 1000 PPM and features two alarm thresholds, allowing for rapid assessment of environmental changes
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X-Sense Wireless Interconnected Combination Smoke & CO Alarm, 3-Pack
2-in-1 Protection: The smoke and carbon monoxide detector is equipped with both photoelectric smoke sensor and electrochemical CO sensor that both detect smoke and dangerous CO levels
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Kidde Smart Carbon Monoxide Detector, Plug-in & AA Battery Backup, COPDW
REAL-TIME KIDDE APP NOTIFICATIONS: Get alerted to CO when you’re home or away (no subscription required); sounds a loud 85-dB alarm when CO is detected; uses 2.4 GHz Wi-Fi
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Kidde Carbon Monoxide Detector, 10-Year Battery-Powered, COBD10
DETECTS CARBON MONOXIDE: Model COBD10 monitors CO and sounds a loud 85 dB alarm to signal evacuation to fresh air; LED warning light indicates hazard; Test/Hush button allows quick checks or temporary silencing; replaces model C3010D
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X-Sense Wireless Combination Smoke and CO Detector, XP0H-WN, 3-Pack
Please Note: XP0H-WN supports wireless interconnection but does not have Wi-Fi
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TrolMaster AS-4 CO2 Alarm Station (Blue Light)
TrolMaster’s Hydro-X system can control most of the horticultural lighting fixtures sold on the market today.
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5% discount
Kidde Carbon Monoxide Detector, 10-Year Battery-Powered, COBDL10
DETECTS CARBON MONOXIDE: Model COBDL10 monitors CO and sounds a loud 85 dB alarm to signal evacuation to fresh air; LED warning light indicates hazard; Test/Hush button allows quick checks or temporary silencing
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First Alert Battery Carbon Monoxide Alarm
Keep your family safe with this easy to use, battery operated carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
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Carbon Monoxide Meter | Waterproof | USA NIST Calibrated & Certificate | 2 Year Battery | 3 Year Sensor | 0-1000ppm CO |
TOUGH: Passes 20 ft drop test. Waterproof up to 3 ft. Protection grade = IP67. Rubberized housing for "soft-touch" feeling.
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FIRST ALERT CO605 Plug-in Carbon Monoxide Detector with Battery Backup, White
Keep your family safe with this easy to use plug in carbon monoxide alarm; It works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there's a power failure
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First Alert Plug in Carbon Monoxide Alarm
Keep your family safe with this easy to use plug in carbon monoxide alarm; It works with any standard outlet
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SimpliSafe Smoke & Carbon Monoxide Alarm Listener
SimpliSafe
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First Alert Battery Carbon Monoxide Alarm
Keep your family safe with this 2-pack of easy to use, battery operated carbon monoxide alarms; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
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Kidde Smart CO Detector + Indoor Air Quality, Plug-in & AA Battery, COPDLQW
REAL-TIME NOTIFICATIONS: Sends alerts via the Kidde App (no subscription required); monitors indoor air quality, humidity, and TVOC levels; uses 2.4 GHz Wi-Fi; sounds a loud 85-dB alarm when CO is detected
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First Alert Plug in Carbon Monoxide Alarm
Keep your family safe from carbon monoxide in multiple rooms with this convenient plug-in carbon monoxide alarm 3-pack; the alarms work with any standard outlet
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GasDog WiFi CO2 Carbon Dioxide Gas Alarm Detector Real-Time 400-5000 ppm Monitoring Audible Alarm for Home/Greenhouse/Garage
Accurate CO2 Detection with NDIR Sensor – Equipped with a high-precision NDIR carbon dioxide sensor, this alarm continuously monitors CO2 concentration from 400 to 5000 ppm with 1 ppm resolution and ±(50 ppm ± 5%) accuracy.
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Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
Electrochemical sensor technology detects CO gas
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5% discount
Kidde Carbon Monoxide Detector, Plug-in & AA Battery Backup, COP
DETECTS CARBON MONOXIDE: Model COP monitors CO levels & sounds a loud 85 dB alarm to signal evacuation; sleep peacefully with no nighttime chirps; LED warning light indicates hazard; Test/Hush button for quick checks
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Masyrt Battery Operated CO2 Detector with High Performance Analysis Chip, 5 in 1 Meter for Air Quality Monitoring, Carbon Dioxide Indication
1 SECOND UPDATE: The air quality monitor can update the system 1 second in real time, and can directly detect air quality without calibration
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Kidde Carbon Monoxide Detector, AA Battery Powered, Portable for Travel or Home, 85 dB Alarm, LED Status Indicators, 3rd Edition
Electrochemical sensor technology detects CO gas
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ATuMan 4-in-1 CO₂ Detector, Indoor Air Quality Monitor, NDIR Sensor
High-Precision NDIR Sensor: Equipped with advanced NDIR technology for accurate CO2 measurement (400-5000ppm), plus temperature and humidity monitoring for reliable indoor air quality data
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First Alert CO605B
Electrochemical carbon Monoxide sensor - the most accurate sensor available as compared to other Sensing technologies
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Kidde Carbon Monoxide Detector, AA Battery-Powered, COB
DETECTS CARBON MONOXIDE: Model COB monitors CO and sounds a loud 85 dB alarm to signal evacuation to fresh air; LED warning light indicates hazard; Test/Hush button allows quick checks or temporary silencing
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5% discount
Kidde Carbon Monoxide Detector, AA Battery-Powered, COBD
DETECTS CARBON MONOXIDE: Model COBD sounds a loud 85-decibel alarm when carbon monoxide is detected; easy-to-read backlit digital display shows status and alarm operation; a test/hush button enables quick checks or silencing alerts; replaces model 900-0146LP
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Kidde Carbon Monoxide Detector, Plug In Wall with 10-Year Battery Backup, Safety Light for Hearing Impaired or Deaf People, Digital LED Display
Easy Installation - simply plug-in to a standard, 120V outlet in your home
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First Alert CO615A Plug-in Carbon Monoxide Detector with Battery Backup, Low Battery Alarm, Backlit Digital, 120 VAC
Item Weight: 0.71 lb
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TOPTES CT-913 Portable Carbon Monoxide Detector, Rechargeable CO Detector with Upgraded Sensor, TFT Color Display with Triple Alarms, 0-1000PPM for Camping, Travel, Industrial & Professional Use
Professional CO Detection: The TOPTES CT-913 helps identify carbon monoxide hazards in homes, RVs, garages, workshops, boats, and job sites. With a 0–1000 PPM detection range, real-time readings, trend graph, and customizable alarm thresholds, it helps quickly assess changing CO levels during inspections and daily use
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We have found a total of 129 carbon dioxide alarms deals at amazon, Acme Tools, Ace Hardware, and other shops for you. The most popular brands include: Kidde, First Alert, and X-Sense. Today's offer is Extech CO240 - Indoor Air Quality Meter - Handheld CO₂, Temperature, Humidity, Dew Point & Wet Bulb Monitor with Audible Alarm with 75% discount. The lowest price we found in our offers is $ 21.99 . The highest price in our price comparison is $ 494.45 . Currently, we have selected 16 reliable shops for you to buy carbon dioxide alarms affordably.