Carbon Monoxide Detectors

Compare 53 carbon monoxide detectors by price, rating, and brand.

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Kidde

Kidde Carbon Monoxide Detector, Plug In Wall with AA Battery Backup, Test-Hush Button

4.7(35,752)

Amazon★ Lowest$36

Kidde

Kidde Carbon Monoxide Detector, Plug-in with AA Battery Backup, Easy-to-Read Digital Backlit Display, 85 dB Alarm, Rotating Plug, LED Status Light Indicators, 5th Edition, COPD

4.7(27,202)

Amazon★ Lowest$45.97-4%$43.97

First Alert

FIRST ALERT Carbon Monoxide Detector, No Outlet Required, Battery Operated, CO400, White, 2 Count (Pack of 1)

4.6(22,922)

Amazon★ Lowest$83.99-58%$34.98

First Alert

First Alert Carbon Monoxide Detector, Plug-In Alarm with Battery Backup, CO606, White, 1-Pack

4.7(22,830)

Amazon★ Lowest$46.99-49%$23.99

Kidde

Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

4.7(19,737)

Amazon★ Lowest$29.97-7%$27.94

Kidde

Kidde Carbon Monoxide Detector, AA Battery Powered, Digital Backlit Display, Portable for Travel or Home, LED Status Indicators, 85 dB Alarm, 5th Edition, COBD

4.7(19,737)

Amazon★ Lowest$31.97

Kidde

Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display

4.6(16,818)

Amazon★ Lowest$69

Kidde

Kidde Hardwired Smoke & Carbon Monoxide Detector, Battery Backup, Interconnectable, LED Warning Light Indicators

4.6(11,479)

Amazon★ Lowest$108.99

First Alert

First Alert CO615 Dual-Power Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display, White

4.6(8,791)

Amazon★ Lowest$67.99-41%$39.98

First Alert

First Alert Carbon Monoxide Detector, Plug-In Alarm with Test & Silence Button, CO600, White, 1-Pack

4.7(7,698)

Amazon★ Lowest$41.99-29%$29.98

First Alert

First Alert CO710 Carbon Monoxide Detector with 10-Year Battery and Digital Temperature Display , White

4.6(4,039)

Amazon★ Lowest$67.99-43%$38.99

Kidde

Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 1 Pack

4.4(2,426)

Amazon★ Lowest$49.99-2%$49

Kidde

Kidde Smoke and Carbon Monoxide Detector, 10-Year Battery Powered, LED Status Lights, 85 dB Alarm, 5-inches, 30CUD10, 1 Pack

4.1(1,526)

Amazon★ Lowest$62.67-14%$54

Kidde

Kidde Hardwired Carbon Monoxide Detector with 9-Volt Battery Backup, 3 LED Indicators

4.7(1,383)

Amazon★ Lowest$70.47-45%$38.99

Kidde

Kidde Carbon Monoxide Detector, AA Battery Powered, Portable for Travel or Home, 85 dB Alarm, LED Status Indicators, 3rd Edition

4.8(1,338)

Amazon★ Lowest$23.97

Kidde

Kidde Carbon Monoxide Detector, AA Battery Powered, Portable for Travel or Home, 85 dB Alarm, LED Status Light Indicators, 5th Edition, COB

4.8(1,336)

Amazon★ Lowest$26.97

Kidde

Kidde Carbon Monoxide Detector, 10-Year Battery Powered, Digital Backlit Display, LED Status Indicators, 85 dB Alarm, 5th Edition, COBD10

4.6(1,335)

Amazon★ Lowest$52.97

Kidde

Kidde Carbon Monoxide Detector, 10-Year Battery Powered, Digital Display, LED Status Indicators, 85 dB Alarm, 3rd Edition

4.6(1,335)

Amazon★ Lowest$52.97-9%$48.12

Kidde

Kidde Nighthawk Battery Powered Carbon Monoxide Alarm with Digital Display

4.6(1,228)

Amazon★ Lowest$50.97

First Alert

FIRST ALERT Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display, GCO1CN

4.4(996)

Amazon★ Lowest$88.99-43%$50.45

Kidde

Kidde Carbon Monoxide Detector, Plug-in Carbon Monoxide Detector with AA Battery Backup, 85 dB Alarm, LED Status Light Indicators, 3rd Edition

4.8(973)

Amazon★ Lowest$34.97-9%$31.97

Kidde

Kidde Carbon Monoxide Detector, Plug-in Carbon Monoxide Detector with AA Battery Backup, 85 dB Alarm, Rotating Plug, LED Status Light Indicators, 5th Edition, COP

4.8(966)

Amazon★ Lowest$36.97-5%$34.97

Kidde

Kidde Smoke and Carbon Monoxide Detector, AA Battery Powered with LED Status Lights, 85 dB Alarm, 5 inches, 30CUDR, 4 Pack

4.3(884)

Amazon★ Lowest$195.97-6%$184.97

Kidde

Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack

4.3(883)

Amazon★ Lowest$99.97-40%$59.99

Kidde

Kidde Worry-Free Carbon Monoxide Detector Alarm with 10 Year Sealed Battery | Model C3010

4.7(779)

Amazon★ Lowest$59.99

Kidde

Kidde Carbon Monoxide + Explosive Gas, Natural Gas & Propane Alarm, Plug-in with AA Battery Backup, Digital Backlit Display, 85 dB Alarm, Rotating Plug, LED Status Indicators, 5th Edition, COPDLG

4.6(451)

Amazon★ Lowest$64.97

Kidde

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

4.6(451)

Amazon★ Lowest$59.97-4%$57.47

Kidde

Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, Voice Alerts, LED Warning Light Indicators, 2 Pack

4.4(428)

Amazon★ Lowest$142.97-27%$104.98

Kidde

Kidde Carbon Monoxide Detector with 10-Year Battery, Digital Display, 3 LEDs, Replacement Indicator, Peak Level Memory, 2 Pack

4.6(399)

Amazon★ Lowest$99.97-10%$89.88

Kidde

Kidde Smoke and Carbon Monoxide Detector, 10-Year Battery Powered, with Voice Alerts, LED Status Lights, 85 dB Alarm, 5 inches, 30CUD10-V, 1 Pack

4.1(377)

Amazon★ Lowest$74.97-7%$69.97

Kidde

Kidde Smart Carbon Monoxide Detector & Indoor Air Quality Monitor, Plug-In, WiFi, Alexa Compatible Device, Voice & App Alerts

4.2(326)

Amazon★ Lowest$89.97

Kidde

Kidde KN-COB-B-LP Nighthawk Carbon Monoxide Alarm, Battery Operated - 21007268

4.5(325)

Amazon★ Lowest$47.89-39%$29

Kidde

Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable LED Warning Light Indicators, 4 Pack

4.4(309)

Amazon★ Lowest$269.97-11%$239

First Alert

First Alert SMICO105-AC, Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with 10-Year Battery Backup, 3-Pack

4.6(290)

Amazon★ Lowest$229.99-31%$157.95

BRK

BRK SC9120B Smoke and Carbon Monoxide Alarm

4.7(270)

Amazon★ Lowest$52.44

Kidde

Kidde Carbon Monoxide Detector, Plug In Wall with 10-Year Battery Backup, Digital LED Display, Test-Hush Button, 3rd Edition

4.7(233)

Amazon★ Lowest$57.97-9%$52.99

Marcala

MARCALA 3-Pack Travel Carbon Monoxide Detector | 2026 V2.0 4-in-1 Natural Gas & Carbon Monoxide Detectors Portable | Wall Plug-in with Backup Battery for Power Outages | Temp, Humidity, Gas & CO Alarm

4.7(203)

Amazon★ Lowest$135.99-16%$113.99

Kidde

Kidde Ultra-Sensitive Carbon Monoxide Detector for Pets, Health, or Medical Conditions, Battery Powered with Digital Display, UNIT

4.3(157)

Amazon★ Lowest$184-58%$77.98

AEGTEST

AEGTEST AGT-2309 Portable Carbon Monoxide Detector, 15-Day Standby, Rechargeable Mini CO Monitor with Lanyard for Travel & Camping, Handheld CO Meter with Audible & Visual Alerts, 0-1000ppm - Blue

4.5(155)

Amazon★ Lowest$45.99-13%$39.99

Kidde

Kidde Smart Smoke and Carbon Monoxide Detector, Ring App Enabled for Real-Time Notifications, Wire-Free Interconnectivity, AA Battery Powered

4.3(150)

Amazon★ Lowest$69.98

Kidde

Kidde Carbon Monoxide Detector, AC-Plug-in with Lithium Battery Backup, Digital Display, Escape & Night Light

4.8(132)

Amazon★ Lowest$98

TUIKEN

5 in 1 Carbon Monoxide Detectors, Natural Gas Detector with Dual Alarm & Bulit-in Battery, Propane CO Detector Plug in (Temp & Humidity) for Home RV Camping Travel (Black)

4.7(96)

Amazon★ Lowest$79.99-50%$39.99

Kidde

Kidde Carbon Monoxide Detector, Plug In Wall with 10-Year Battery Backup, Digital LED Display, Voice Alerts, Test-Hush Button, 3rd Edition

4.6(70)

Amazon★ Lowest$83.49

Kidde

Kidde Living Area Plug-in Carbon Monoxide Detector Alarm with Sealed Lithium Battery Back-up and Digital Display

4.5(59)

Amazon★ Lowest$66.67-18%$54.97

Kidde

Kidde Carbon Monoxide Detector, Plug In Wall with 10-Year Battery Backup, Safety Light for Hearing Impaired or Deaf People, Digital LED Display

4.1(34)

Amazon★ Lowest$96.79

Kidde

Kidde Carbon Monoxide Detector, AA Battery Powered, Detects Low-Level CO, Digital Backlit Display, Portable for Travel or Home, LED Status Indicators, 85 dB Alarm, 5th Edition, COBDL

4.9(31)

Amazon★ Lowest$42.97

Awatin

Combination-Explosive-Gas-Carbon-Monoxide-Detectors,4-in-1 Upgraded High-Sensitivity Sensor,Real-time Monitoring &Digital Display,Natural Gas Leak,Propane & CO Alarm Plug in for Home,RV,Apartment

4.4(30)

Amazon★ Lowest$39.99-13%$34.97

Kidde

Kidde Smart Carbon Monoxide Detector & Indoor Air Quality Monitor, Plug-in with AA Battery Backup, Real-Time Notifications, 2.4 GHz Wi-Fi Enabled, Rotating Plug, 85 dB Alarm, 5th Edition, COPDLQW

4.2(27)

Amazon★ Lowest$79.97

Kidde

Kidde Carbon Monoxide Detector, 10-Year Battery Powered, LED Status Indicators, 85 dB Alarm, 5th Edition, COB10

4.9(24)

Amazon★ Lowest$45.97

Kidde

Kidde Smart Carbon Monoxide Detector, Plug-in with AA Battery Backup, Real-Time Notifications, 2.4 GHz Wi-Fi Enabled, Rotating Plug, 85 dB Alarm, 5th Edition, COPDW

4.6(24)

Amazon★ Lowest$59.97

BRK

First Alert BRK SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm, 1-Pack

4.7(21)

Amazon★ Lowest$44.99-13%$38.99

Kidde

Kidde Smoke and Carbon Monoxide Detector, AA Battery-Powered, Wire-Free Interconnect, Voice Alerts, LED Status Light 85 dB Alarm, 5-inches, 30CUDR-VRF

5.0(17)

Amazon★ Lowest$79.97

KOABBIT

Carbon-Monoxide-Detector Plug in, Carbon Monoxide Alarm,CO Monitor with Digital Display : PPM for Home,RV,Apartment,Kitchen (2 Pack)

4.4(11)

Amazon★ Lowest$49.99

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