Carbon monoxide detector deals(Disclaimer)
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🏅 132 carbon monoxide detectors in price comparison
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💶 Current offers and discounts
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🕝 Last updated on 10.10.2026
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
$ 53.99
$ 64.99
To the offer
20% 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.
$ 47.90
$ 59.99
To the offer
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
$ 71.41
free delivery
To the offer
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
$ 108.97
free delivery
To the offer
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
$ 36.99
$ 42.99
To the offer
Kidde Smart Smoke & CO Detector with Ring, AA Battery, RGCUDR-RW
Double the Detection: Alerts you to both smoke and carbon monoxide (CO)
$ 69.97
free delivery
To the offer
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
$ 62.18
free delivery
To the offer
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
$ 44.00
free delivery
To the offer
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
$ 43.97
free delivery
To the offer
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
$ 129.99
$ 139.99
To the offer
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
$ 57.47
free delivery
To the offer
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
$ 65.99
free delivery
To the offer
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
$ 44.95
free delivery
To the offer
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.
$ 249.95
free delivery
To the offer
14% discount
SITERWELL Plug in Carbon Monoxide Detector 10 Year Battery&AC Powered,
SITERWELL
$ 51.99
$ 60.67
Only:
42hrs
16min
44sec
To the offer
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
$ 36.99
$ 39.99
To the offer
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
$ 89.97
free delivery
To the offer
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
$ 39.99
$ 44.94
To the offer
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
$ 37.99
$ 42.99
To the offer
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
$ 34.99
To the offer
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
$ 34.97
$ 36.97
To the offer
Sensorcon Inspector CO Monitor | ETL Intrinsically Safe Portable Gas Monitor | UL 913 | Industrial and Scientific | HVAC, Utility and Safety | Industrial Model
Designed for industrial and commercial applications. Watch the short video for more information
$ 168.00
free delivery
To the offer
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
$ 39.95
$ 57.99
To the offer
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
$ 60.00
free delivery
To the offer
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
$ 30.47
$ 31.97
To the offer
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.
$ 39.99
free delivery
To the offer
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
$ 40.47
$ 42.97
To the offer
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
$ 79.97
free delivery
To the offer
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
$ 109.99
$ 125.99
To the offer
5% discount
FIRST ALERT BRK SC7010B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 3-Pack
3 pack of 120-Volt hardwired combination photoelectric smoke and electrochemical Carbon monoxide alarms with battery backup
$ 174.79
$ 183.99
To the offer
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
$ 69.97
free delivery
To the offer
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
$ 56.94
free delivery
To the offer
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
$ 49.97
free delivery
To the offer
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Interconnectable, LED Warning Light Indicators
24/7 Self-testing components are always checking the device to ensure it's operating as expected (not a substitute for a manual push test)
$ 53.99
free delivery
To the offer
SITERLINK Hardwired Smoke and Carbon Monoxide Detector with Battery
siterlink
$ 221.99
free delivery
To the offer
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
$ 35.99
$ 42.99
To the offer
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
$ 74.97
free delivery
To the offer
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
$ 75.99
free delivery
To the offer
14% discount
First Alert Battery Smoke 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
$ 29.99
$ 34.98
To the offer
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
$ 51.97
free delivery
To the offer
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
$ 73.99
free delivery
To the offer
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
$ 38.99
$ 44.99
To the offer
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
$ 79.99
free delivery
To the offer
Kidde Smoke Detector, Hardwired & 10-Year Battery Backup, 20SA10, 3 Pack
SMOKE DETECTION: Model 20SA10 features advanced sensing technology that detects smoke over 25% faster*; sounds a loud 85-decibel alarm with red LED light for clear visual warnings; suitable for homes
$ 112.97
free delivery
To the offer
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.
$ 29.98
free delivery
To the offer
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
$ 239.98
$ 269.99
To the offer
TPI Carbon Monoxide Analyzer Kit: 0 to 10,000 ppm
Choose from a complete line of flue gas and CO analyzers
$ 448.67
free delivery
To the offer
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
$ 106.00
free delivery
To the offer
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.
$ 272.12
free delivery
To the offer
MSA ALTAIR 4XR Multi-Gas Detector (O2, H2S, CO) - Handheld Instrument
MULTIGAS DETECTION: Equipped to measure Lower Explosive Limit (LEL), Oxygen (O2), Hydrogen Sulfide (H2S) and Carbon Monoxide (CO), designed for virtually no cross-channel interference
$ 955.81
free delivery
To the offer
12% discount
X-Sense 1-Pack Interconnected Smoke and CO Detector, SC06-W
Please Note: SC06-W supports wireless interconnection but does not have Wi-Fi
$ 43.96
$ 49.99
To the offer
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
$ 74.97
free delivery
To the offer
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.
$ 47.99
$ 59.99
To the offer
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
$ 169.99
$ 189.99
To the offer
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.
$ 149.00
free delivery
To the offer
5% discount
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 2 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
$ 94.99
$ 99.99
To the offer
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
$ 69.97
free delivery
To the offer
First Alert Hardwired Smoke and Carbon Monoxide Detector Combination Alarms with 10-Year Battery Backup, SMICO105-AC, 6 Pack
First Alert
$ 316.99
free delivery
To the offer
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
$ 65.00
free delivery
To the offer
First Alert SC5 Battery Smart Smoke & Carbon Monoxide Alarm
Compatible with Google's Nest Protect Alarm
$ 129.94
free delivery
To the offer
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.
$ 99.45
free delivery
To the offer
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
$ 63.21
free delivery
To the offer
Amazon Smart Air Quality Monitor, Detects temperature, humidity, carbon monoxide, PM2.5 and VOCs, Get notifications when air quality drops, Works with Alexa
Know your air – Amazon Smart Air Quality Monitor makes it easy to understand what’s in your indoor air.
$ 69.99
free delivery
To the offer
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
$ 124.99
free delivery
To the offer
10% discount
Kidde Smoke & CO Detector, Hardwired & AA Battery Backup, 30CUAR-V, 1 Pack
2-in-1 DETECTION: Model 30CUAR-V 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
$ 62.97
$ 69.97
To the offer
SITERWELL Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery
SITERWELL
$ 287.99
free delivery
To the offer
18% discount
MSA Altair Single-Gas Detector, (CO) (Low: 25ppm, High: 100ppm), UL
MAINTENANCE FREE: High-capacity two-year (1080 alarm minutes) battery, no sensor or battery changes necessary, built-in gas delivery adapter to eliminate additional accessories
$ 225.57
$ 276.00
To the offer
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
$ 38.69
$ 42.99
To the offer
First Alert Hardwire Combination Smoke & Carbon Monoxide Alaram
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
$ 162.90
free delivery
To the offer
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Voice Alerts, 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
$ 143.99
free delivery
To the offer
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
$ 63.85
$ 67.99
To the offer
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.
$ 220.58
free delivery
To the offer
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.
$ 128.78
free delivery
To the offer
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
$ 125.98
$ 139.99
To the offer
First Alert FAT1039718 Battery-Powered Carbon Monoxide Alarm, 9v, White
Alerts to dangerous Carbon monoxide levels
$ 32.48
free delivery
To the offer
Kidde Smoke & Carbon Monoxide Detector, Hardwired, Interconnect Combination Smoke & CO Alarm with Battery Backup, Voice Alert, Pack of 2
Fire & CO Detector in 1 unit with alert modes, LED lights, & voice alarm, that states, "Fire! Fire!", "Warning! Carbon Monoxide!", or "Low Battery!"
$ 219.99
free delivery
To the offer
SITERWELL Smoke & CO Detector Interconnected, Hardwired & AA Battery
WIRED OR WIRELESS CONNECTION - This smoke and carbon monoxide detector can be hardwired or wirelessly connected to up to 12, so when one alarm is triggered, they all sound and notify everyone of the emergency.
$ 138.99
free delivery
To the offer
18% discount
SITERWELL Smoke Detector Combo Smoke & Carbon Monoxide Alarm
SITERWELL
$ 48.99
$ 59.99
To the offer
Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery, 30CUD10, 3 Pack
Kidde
$ 169.97
free delivery
To the offer
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
$ 175.00
free delivery
To the offer
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 4 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
$ 194.99
free delivery
To the offer
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
$ 117.95
free delivery
To the offer
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.
$ 64.99
free delivery
To the offer
First Alert SMCO210 Sealed 10-Year Battery Combo Smoke and Carbon Monoxide Detector with Slim Profile Design
Reliable Detector: The First Alert SMCO210 Sealed 10-Year Battery Combo Smoke and CO alarm provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install detector
$ 47.99
free delivery
To the offer
First Alert Hardwire Combination Smoke & Carbon Monoxide Alarm with Voice
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
$ 172.99
free delivery
To the offer
5% discount
TopTes Guard-101 Gas Detector, 4 Gas Monitor for H2S, CO, LEL and O2, with Vibration, Visual and Audible Alarms, 14h Long Battery Life, Safety Explosion-Proof, for Work, Home - Orange
Quick Detection, Safety First: Guard-101 4 gas monitor multi gas detector is designed for rapid detection of 4 types of gases (H2S, CO, LEL, O2). The battery life lasts up to 14 hours, ensuring long-term monitoring of gas concentrations
$ 94.99
$ 99.99
To the offer
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.
$ 28.99
free delivery
To the offer
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
$ 159.97
$ 189.99
To the offer
Safe T Alert - Mini Dual LP/CO Alarm - Flush Mount Black - 25-742-BL
DUAL PROPANE & CO DETECTION – Patented Double-Duty Alarm upgrades single 12V propane alarms to detect both Propane Gas and Carbon Monoxide. Replaces Atwood Models 31013 & 31014 without modifications.
$ 73.87
free delivery
To the offer
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
$ 125.99
$ 139.99
To the offer
Kidde Hardwired Kidde App Enabled Smart Smoke and Carbon Monoxide Detector, AA Battery Backup, Voice Alerts, Interconnected Alarm
Double the Detection: Alerts you to both smoke & CO
$ 74.97
free delivery
To the offer
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.
$ 55.99
$ 59.99
To the offer
First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack
6 pack of hardwired smoke alarms, includes battery backup for power outages
$ 101.21
free delivery
To the offer
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
$ 237.48
$ 269.99
To the offer
8% discount
Siterlink Carbon Monoxide Detectors Plug in,10 Year Replaceable Battery
siterlink
$ 85.97
$ 92.97
To the offer
13% discount
Kidde Smoke & Carbon Monoxide Detector, Hardwired Interconnect, Combination Smoke & CO Alarm with Battery Backup, Voice Alerts
Smoke detector carbon monoxide detector combo – sounds loud 85 decibel alarm with voice alerts that announce "Fire! Fire!" or "Warning! Carbon Monoxide!"
$ 129.00
$ 149.00
To the offer
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
$ 139.97
free delivery
To the offer
10% discount
Heiman Smart Carbon Monoxide Detectors, 3-Pack Interconnected, with Gateway
【Wireless Interconnect with Smart Gateway - Whole-Home Protection】 When one carbon monoxide detectors detects CO, all linked alarms sound within 200 m/656 ft, while the gateway sends real-time push alerts to the HEIMAN Smart App. 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,such as S1-R / HS2WL-R, unify safety across rooms)
$ 89.99
$ 99.98
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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.
$ 35.99
$ 39.99
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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
$ 43.97
free delivery
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13% discount
X-Sense Interconnected Smoke and CO Detector, SC07-W, 3-Pack
Please Note: The SC07-W supports wireless interconnection but does not have Wi-Fi
$ 121.47
$ 139.99
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SITERWELL Hardwired Interconnected Smoke and Carbon Monoxide Detector, 10 Year Product Life Alarm Smoke Carbon Monoxide Detector with 2 AA Batteries Back Up, Smoke and CO Detector Voice Alert,5 Pack
ACCURACY IN ALARMING - Utilizes dual-light wave technology, it is more sensitive to detecting slow smoldering fires which produce light smoke. It can also distinguish non-fire smoke, reducing false alarms and keeping your cooking fun uninterrupted.
$ 263.99
free delivery
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First Alert Hardwire Combination Smoke & Carbon Monoxide Alarm with Voice
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
$ 63.90
free delivery
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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
$ 179.97
free delivery
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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
$ 109.98
$ 125.99
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SITERWELL Smoke Detector Combo Smoke & Carbon Monoxide Alarm
SITERWELL
$ 209.99
free delivery
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Kidde Smoke & CO Detector, Hardwired & 10-Year Battery, 30CUA10-V, 3 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
$ 209.97
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
$ 129.96
free delivery
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Ting Electrical Fire Prevention Sensor & Service - Residential Use Only
PEACE OF MIND: Ting (the sensor and service) is statistically proven to prevent ~80% of electrical fires, significantly reducing electrical fire risk in homes. Ting alone cannot eliminate 100% of electrical fire risks.
$ 99.00
free delivery
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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
$ 112.99
$ 125.99
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9% discount
Kidde Smoke and Carbon Monoxide Detector Alarm with Voice Warning | Hardwired w/10 Year Lithium Battery Backup | Interconnectable | Model # i12010SCO, White
Provides protection from two hazards - Fire and CO in one unit with 10-year sealed lithium battery backup.
$ 122.95
$ 134.99
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Kidde Smoke & CO Detector, Hardwired & 10-Year Battery, 30CUA10, 3 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
$ 199.97
free delivery
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Kidde Smoke & CO Detector, Hardwired & AA Battery Backup, 30CUAR-V, 3 Pack
2-in-1 DETECTION: Model 30CUAR-V 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
$ 196.97
free delivery
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Kidde Smoke & CO Detector, AA Battery-Powered, 30CUDR-V, 3 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
$ 159.97
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
$ 55.99
free delivery
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First Alert BRK SMI100-AC Hardwired Smoke Alarm with Battery Backup, Contractor 6-Pack
Note: A loose neutral (white wire) connection within the home junction box could prompt a device malfunction
$ 99.00
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)
$ 77.99
$ 82.98
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First Alert Smoke and Carbon Monoxide Detector Combination Alarms, SMICO105-AC Smoke Detector Hardwired with 10-Year Battery Backup, 12 Pack
First Alert
$ 650.63
free delivery
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Kidde Smoke Detector, Hardwired & 10-Year Battery Backup, 20SA10, 1 Pack
SMOKE DETECTION: Model 20SA10 features advanced sensing technology that detects smoke over 25% faster*; sounds a loud 85-decibel alarm with red LED light for clear visual warnings; suitable for homes
$ 39.97
free delivery
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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
$ 49.96
free delivery
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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
$ 139.99
free delivery
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First Alert BRK Hardwire Combination Smoke & Carbon Monoxide Alarm with LED Strobe & 10-Year Battery Backup, 1-Pack
First Alert BRK Precision Detection advanced sensing technology reduces cooking nuisance alarms and delivers early warning
$ 161.56
free delivery
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Kidde Carbon Monoxide & Explosive Gas Alarm, Plug-in & AA Battery, COPDLG
3X THE DETECTION: Model COPDLG detects low levels of CO, natural gas, propane and sounds a loud 85-dB alarm; backlit digital display indicates level of CO presence or the word "GAS" when explosive gas is present; replaces model 900-0113, KN-COEG-3
$ 53.34
free delivery
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First Alert Hardwire Combination Smoke & Carbon Monoxide Alarm
First Alert
$ 145.63
free delivery
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First Alert Battery Carbon Monoxide Alarm
ELECTROCHEMICAL CO SENSOR | Highly accurate sensor detects elevated carbon monoxide levels from faulty fuel-burning appliances, blocked chimneys, and running cars in the garage even when gas can't be seen, smelled, or tasted
$ 83.99
free delivery
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7% discount
Kidde Smoke Detector, AA Battery-Powered, 20SDR, 1 Pack
SMOKE DETECTION: Model 20SDR detects smoke over 25% faster*; sounds a loud 85-decibel alarm with red LED light for clear visual warnings; suitable for homes
$ 27.97
$ 29.97
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Carbon Monoxide Detector CO Analyzer + Pump by Forensics | USA NIST Calibration | Water, Dust & Explosion Proof | USB Recharge | 0-1000 ppm |
ACCURATE: Carbon Monoxide (CO) gas detector + PUMP (0.5LPM 500cc/min), 0-1000ppm with 1ppm resolution.
$ 169.45
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
$ 114.99
free delivery
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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
$ 54.97
$ 57.97
To the offer
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup and Voice & Location Alerts, SMCO100V-AC, 2-Pack
First Alert
$ 108.85
free delivery
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First Alert/BRK Brands 1039727 Carbon Monoxide Detector
Item Weight: 0.73 lb
$ 48.66
free delivery
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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
$ 75.88
free delivery
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We have found a total of 132 carbon monoxide detectors deals for you at amazon, Acme Tools, Ace Hardware, and other shops. The most popular brands are: Kidde, First Alert, and X-Sense. Today's offer is First Alert Hardwire Combination Smoke & Carbon Monoxide Alarm with 17% discount. The lowest price we found in our deals is $ 27.97 . The highest price in our price comparison is $ 955.81 . Currently, we have selected 15 reliable shops for you to buy carbon monoxide detectors affordably.