Best Carbon Monoxide Radon Detector in 2022 [*Top Picks*]

Looking for the best carbon monoxide radon detector on the market? We’ve got you covered. Check out our ratings of absolute bestsellers below and make a final decision.

777 Reviews Scanned

  • Kidde Nighthawk Carbon Monoxide Detector & Propane, Natural, & Explosive Gas Detector, AC-Plug-In with Battery Backup, Digital Display , White
    Bestseller #1
    Kidde Nighthawk Carbon Monoxide Detector & Propane, Natural, & Explosive Gas Detector, AC-Plug-In with Battery Backup, Digital Display , White (386)
      Easy to install CO and explosive gas alarm with three convenient mounting options including AC wall outlet, plugin six foot power cord, or table top Carbon Monoxide (CO) alarms four quick beeps, followed by five seconds of silence, followed by four quick beeps. Displays CO concentration Gas alarms one second of alarm on, one second of alarm off, repeating with “GAS” shown in display Loud pulsing alarm that will sound to alert you to a potential problem Low battery warning feature indicates when the battery needs replacement UL Certified, 5-year Limited Warranty Two alarms in one detects carbon monoxide and explosive gas Three convenient mounting options Digital display and peak level button displays the peak CO level recorded by the alarm since it was last reset Battery backup 9 volt battery included Kidde’s carbon monoxide alarms meet the requirements of Underwriters Laboratories (UL), an independent facility that tests products for compliance with widely-accepted safety standards
  • Kidde Carbon Monoxide Detector, AC-Plug-In with Battery Backup, CO Alarm with Replacement Alert
    Bestseller #1
    Kidde Carbon Monoxide Detector, AC-Plug-In with Battery Backup, CO Alarm with Replacement Alert (386)
      CO detector that alerts with a warning signal against dangerous levels of carbon monoxide in your home Easy & quick installation - plugs directly into your home's standard wall outlet, 85 decibel alarm alerts of fire Protects during a power failure - 2-AA batteries, included with pack, provide backup service in the event of a power outage Whole home family protection - place 1 carbon monoxide detector on each level of your home & in your bedroom to protect from poisonous gases UL Certified, 10-year limited warranty
  • Plug-in Carbon Monoxide Detector and Natural Gas Detector Alarm by Koabbit,Combination 2-in-1 Co Detector and Combustible Gas Detector,Propane,LPG,Gas Leak Detector for Kitchen/Home,UL2034 (2 Pack)
    Bestseller #1
    Plug-in Carbon Monoxide Detector and Natural Gas Detector Alarm by Koabbit,Combination 2-in-1 Co Detector and Combustible Gas Detector,Propane,LPG,Gas Leak Detector for Kitchen/Home,UL2034 (2 Pack) (77)
      【Combination 2 in 1 Gas Detector Alarm by Koabbit】Carbon Monoxide Detector and Natural Gas Detector (combustible gas),When a dangerous concentration of carbon monoxide or explosive gas is detected, it will immediately sound an alarm, allowing you to quickly make a judgment and protect your family getting hurt. 【Excellent Sensitivity of Dual Sensors】a catalytic combustion method sensor and an electrochemical carbon monoxide sensor. Adopts Imported sensors,Stable work, responsive, safe and reliable. 【LCD Digital Display】This display clearly shows levels of Gas that the unit has detected and stored-- from 0 to 3000 ppm--and it updates every 9 seconds to indicate any sudden changes. 【Voice Alarm】When the concentration of Carbon Monoxide reaches 100PPM or the concentration of Combustible gas reaches 6%, the LCD screen begins to display the concentration value, and the red LED lights flash and emit a loud voice alarm mode -- 85 decibel alarm. 【Power Failure Protection】 using 9V rechargeable battery or 9V ordinary battery, rated voltage 9.6V, in the case of power failure, the backup battery can keep the gas detector running. 【Easy Installation & Quality】Easy to mount on any wall or ceiling without an electrician;The Koabbit detector has been rigorously tested and passed UL2034 safety certification, If you have any questions, Please contact us by E-mail, We will give you a SATISFACTORY SOLUTION.
  • Kidde Carbon Monoxide Detector with Lithium Battery, Digital Display & 3 LED Lights
    Bestseller #1
    Kidde Carbon Monoxide Detector with Lithium Battery, Digital Display & 3 LED Lights (4087)
      CO detector with alert modes & 3 LED lights that pulse for power, CO detection, & low battery Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm Protects during a power failure - CO detector operates on a 10-year, sealed lithium battery Easy installation & no battery fuss - CO alarm will automatically activate when attached to the mounting bracket UL Certified, 10-year limited warranty
  • Car, Vehicle, Aircraft Carbon Monoxide CO Detector | Fast Low-Level 9ppm Alarm | Vehicles, Police, Pilots, Travel, Bus, Trucks | Metal Body, Small 2oz |
    Bestseller #1
    Car, Vehicle, Aircraft Carbon Monoxide CO Detector | Fast Low-Level 9ppm Alarm | Vehicles, Police, Pilots, Travel, Bus, Trucks | Metal Body, Small 2oz | (80)
      🚗 USES: Exhaust leaks in vehicles (i.e. SUVs, aircraft, school buses, trucks & fleet vehicles that triggers headaches, nausea & driver fatigue. 🔬ACCURATE: CO low-level alarm at 9ppm & 25ppm alarms WHO, EPA, ASHRAE, OSHA, NIOSH CO recommended exposure levels. 🔔 FAST ALARMS: Alarms at >9ppm @ 60 secs, compared to home CO detectors that only alarm >70ppm @ 60-240 minutes. Bright RED LED and buzzer alarms. 👫 EASY USE: Continuous 8-12 month operation with same batteries. Easy one button operation. Small form factor (2oz), 3M stick-on mount. 🕵️ TRUST: ** 1 year limited warranty ** Arrives factory calibrated ** 100% product test and verification in the USA * Best Japanese CO sensor ** 100% quality guaranteed **
  • Kidde Nighthawk Carbon Monoxide Detector, AC-Plug-In with Battery Backup, Digital Display
    Bestseller #1
    Kidde Nighthawk Carbon Monoxide Detector, AC-Plug-In with Battery Backup, Digital Display (786)
      Protects during a power failure - carbon monoxide alarm contains a 9V battery backup in case of plug-in failure Easy installation - plug can be installed in any outlet of your home; or use the attached extension cord to place on a table or shelf Peace of mind - when CO detection is normal, a red dot appears in the lower right corner & blinks; includes a test button Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm & memory storage UL Certified, 10-year limited warranty
  • Klein Tools ET110 CO Meter, Carbon Monoxide Tester and Detector with Exposure Limit Alarm, 4 x AAA Batteries and Carry Pouch Included
    Bestseller #1
    Klein Tools ET110 CO Meter, Carbon Monoxide Tester and Detector with Exposure Limit Alarm, 4 x AAA Batteries and Carry Pouch Included (386)
      Easy-to-use CO meter detects and measures concentration levels of carbon monoxide gas Portable CO detector with user protection and short-term exposure limit (STEL) alarm Low level alarm (35 ppm) and high level alarm (200 ppm) Audible and visual alarms Backlit display with CO measurements (0 to 1000 ppm) and temperature (Farenheit and Celcius) Auto-power off after 20 minutes of no usage helps conserve battery life Includes carrying pouch and 4xAAA batteries
  • Kidde Smoke & Carbon Monoxide Detector, Battery Powered, Combination Smoke & CO Alarm, Voice Alert
    Bestseller #1
    Kidde Smoke & Carbon Monoxide Detector, Battery Powered, Combination Smoke & CO Alarm, Voice Alert (386)
      Fire and CO detector in 1 unit with alert modes, LED lights, and voice alarm, that states, "Fire. Fire.", "Warning. Carbon Monoxide.", or "Low Battery." Ionization sensor technology - smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries Test-Hush Feature - silences the unit for approximately 8 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling UL Certified, 10-year limited warranty
  • X-Sense 10-Year Battery Smoke and Carbon Monoxide Alarm with Display, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check, SC01, 5-Pack
    Bestseller #1
    X-Sense 10-Year Battery Smoke and Carbon Monoxide Alarm with Display, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check, SC01, 5-Pack (576)
      10-Year Battery & 10-Year Sensor: This smoke and carbon monoxide alarm provides 10 years of continuous power with a built-in lithium battery, saving on energy while remaining eco-friendly; saves you from constantly having to change batteries; an end-of-life signal will let you know when it's time to replace the unit for safety Practical LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm; if a CO concentration of 30-999 ppm exists for a certain time period, the screen will be backlit blue, and the LED indicator will flash red 4 times every 5.8 seconds 2-in-1 Accurate, Reliable & Highly Sensitive Alarm: Equipped with both photoelectric smoke sensor and electrochemical CO sensor that work independently of each other; every second counts; detects both fast and slow-burning fires, and instantly notifies you when dangerous smoke or CO concentration is detected while minimizing false alarms; provides the ultimate protection from 2 deadly threats, all contained in 1 unit Simple to Use: Test/Silence button enables you to test the alarm weekly, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to easily know the working status of the alarm; in case of an emergency, an alarm tone of over 85 dB will sound throughout your entire home, instantly alerting the entire household, even those in sleep Quick & Easy Installation with Guaranteed Quality: Requires no rewiring; easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs; certified to meet the UL 217 & UL 2034 safety standards for your peace of mind and absolute confidence in our product
  • 3 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, with Display,Battery Operated,White
    Bestseller #1
    3 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, with Display,Battery Operated,White (26)
      【2IN 1 DETECTOR】:One Alarm to Protect Against 2 Deadly Threats, Including Smoke and Carbon Monoxide; Instantly Notify You When Dangerous Smoke or CO Concentration Is Detected While Minimizing False Alarms. 【HIGH ACCURATEL SENSOR】:Upgraded Photoelectric and Electrochemical Sensors Significantly Increase the Sensitivity of the Alarm for a Faster Response Time While Minimizing False Alarms. 【SCIENTIFIC DESIGN 】: A full 360 ° Ring of Air Intakes Ensures Complete Detection with No Blind Spots, Ensure Accuracy and High Sensitivity. 【LCD DISPLAY】: Clearly Displays Real-Time Carbon Monoxide (CO) Concentration in the Surrounding Air, Real-Time Monitor Protects Your Safety. 【PREMIUM QUALITY】: A 6-Year Warranty, and Lifetime Customer Support, If You Have Any Questions, Please Feel Free to Contact Us.
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