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5 Best Best Smoke And Carbon Monoxide Detectors of 2025

Last Updated - 2025/05/12

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

TOPTES

TopTes Guard-756 Upgraded O2 Detector, Portable Oxygen Detector, 0.5s Fast Response, with Vibration, Visual & Sound Alarms, Rechargeable O2 Monitor, Dust and Explosion Proof, for Work, Home - Orange

TOPTES

CA$109.99

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Main highlights
- What You Will get: Guard-756 Handheld Oxygen Detector, a packaging box, user manual, charging cable, and standard gas cover. The device is factory calibrated and has passed rigorous safety tests by internationally recognized authorities. It holds valid certifications and meets industry standards, ensuring high reliability and accuracy in various environments
- Triple Alarms: The Guard-756 oxygen meter features three alarm modes: LED light, vibration, and sound. After an alarm, it automatically logs data for tracking and safety, with a capacity of up to 999 records. Its sensor is located at the top of the device, minimizing the chance of airflow blockage by the hand when held or worn, and reducing the risk of contamination from hand residue or dust
- Precise Sensor with 0.5-Second Quick Response: The Guard-756 upgraded O2 monitor features a DDS sensor that triggers an alarm within 0.5 seconds when oxygen levels reach the preset threshold, continuing until levels return to safe. The upgraded sensor offers longer life, greater accuracy, and high resolution
- Portable and Explosion-Proof: The compact oxygen monitor with a back clip is easy to carry. Made from high-strength ABS plastic, it is waterproof, dustproof, and explosion-proof. Suitable for industrial work, mining, firefighting, labs, and home use, it’s ideal for safety managers, lab technicians, and emergency responders
- 7-Day runtime & 4-Hour Quick Charge: The oxygen detector is equipped with a robust 2000mAh battery that charges fully in 4 hours, offering up to 7 days of operation on a single charge. It includes a real-time battery indicator, and a low-battery alert activates automatically when power falls below 10%, ensuring uninterrupted monitoring and protection
CA$109.99
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

GasDoc

GasDoc DS-399 Carbon Monoxide Detector, 168HR Standby, Rechargeable 3-in-1 Portable CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent - Dark Blue

GasDoc

CA$49.99

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- carbon monoxide detectors portable carbon monoxide detector for travel carbon monoxide detector camping battery powered meter alarm low level home rv smart tester co air quality
- Powerful Rechargeable Battery: Featuring a powerful 1000mAh lithium battery, this CO alarm is equipped with Type-C charging capability, ensuring minimal downtime. A full charge provides up to 168 hours of continuous use, making it a reliable choice for long trips and extended outdoor stays
- Easy to Carry: This handheld CO tester is designed to be extremely compact, roughly the size of your palm. Its small size makes it easy to carry, whether tucked in your pocket or attached to your luggage using the included lanyard. Its portability ensures that safety is always within reach during your travels
- Carbon Monoxide Detector: The DS-399 Portable Carbon Monoxide Detector can detect CO levels ranging from 0 to 1000 PPM. It also allows you to set custom alarm thresholds for even earlier detection, ensuring your safety. In addition, the CO meter monitors real-time temperature and humidity, providing you with accurate environmental data
- Audio-visual Alarm: The detector allows you to set custom CO alarm thresholds. When the gas concentration exceeds the set alarm threshold, the device emits an audible alarm, and the ring indicator light below the screen changes color based on the alert level. This dual alert system provides double protection for your safety
CA$49.99
3
Best Value

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

GasDoc

DS-100 Portable Carbon Monoxide Detector for Travel, 140H Standby, CO Detector with Magnetic Back, Rechargeable 3-in-1 CO Monitor with Audible & Visual Alarm for Camping, Hotel, Car & RV

GasDoc

CA$48.99

CA$52.99
(7% Off)

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Main highlights
- What You Get: You will receive DS-100 Carbon Monoxide Detector, Type - C Cable, Outdoor Special Rope Buckle, User Manual
- Large Capacity Battery: The CO detector features a powerful 1000mAh lithium battery with Type-C fast charging support, eliminating the need for frequent replacements and ensuring long-lasting operation. A single full charge lasts 140 hours, providing reliable safety during extended trips, making it an ideal travel companion
- Easy to Carry: The CO Meter is designed to be compact and lightweight, measuring 7.6x6x3 cm, making it easy to fit into your luggage without occupying much space. The included lanyard allows for easy carrying, even when traveling light. Ensuring safety and peace of mind wherever your journey takes you
- Carbon Monoxide Detector: The DS-100 is a 3-in-1 portable carbon monoxide detector that can detect carbon monoxide levels from 0 to 1000ppm, it will alert you when the concentration reaches 50 ppm. This allows you to detect and mitigate risks at low level carbon monoxide. It also measures temperature and humidity, enables you to observe temperature and humidity in real time, convenient for daily use
- Audio-visual Alarm: Provides an audio-visual alarm function. In default mode, when the carbon monoxide concentration reaches and exceeds 50ppm, the screen's yellow or red indicator bars will flash, accompanied by a high-decibel alarm. As the carbon monoxide concentration increases, the alarm frequency accelerates, enabling you to promptly detect danger and protect yourself
CA$48.99
CA$52.99 (7% Off)
4

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

GLBSUNION

Combination Smoke and Carbon Monoxide Detector Alarm, 2-Pack Beeps Warning Smoke and CO Alarms for Basements Travel Home Office House Bedroom Living Room Car, Battery Operated, Comply with UL 217/2034

GLBSUNION

CA$69.99

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Main highlights
- 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, The unit is of malfunction if the unit sounds all the time, Reinstall the battery to repeat the operation Until normal.
- Quick & Easy Installation with Guaranteed Quality: Product Dimensions: 4 * 4 * 1.5 inch, 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 safety standards for your peace of mind and absolute confidence in our product. you can get: 1. two detector alarms with Mounting bracket, 2. one manual, 3. four screws.
- Keep your family safe with this battery operated smoke and carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO and smoke levels, even if there's a power failure(Operated by 2 x 1.5V AA Batteries (not included)
- Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85dB siren provides a clear, loud warning upon detection. Note: Normal smoke gas is Smoldering fire smoke gas, Smoldering fire smoke gas is different from kitchen/cooking oil fumes. the smoke alarm is designed to detect and alarm for normal Smoldering fire smoke ags, not for kitchen/cooking oil fumes, kitchen/cooking oil fumes causes many false alarm, so the new safety standard UL217 requires smoke alarm depletes the fales alarm caused by kitchen/cooking oil and reduce the rate of false positive. please install the device in the right place under instructions.
- 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
CA$69.99
5

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

First Alert

First Alert SCO5RVA Battery Operated Combination Carbon Monoxide and Smoke Alarm

First Alert

CA$50.39

More Details
Main highlights
- Photoelectric sensor detects smoke while minimizing false alarms
- Electrochemical CO sensor alerts you to carbon monoxide danger. Age 3 - 8 years
- Date on the alarm indicates when the alarm was manufactured.
- Combination smoke detector/carbon monoxide alarm detects two threats
- Battery-operated unit installs quickly and easily without an electrician
- A single button tests the unit or silences the alarm. Where to install - kitchen, living room, basement, bathrooms, hallway, indoors
CA$50.39

5 Best Best Smoke And Carbon Monoxide Detectors of 2025

TopTes Guard-756 Upgraded O2 Detector, Portable Oxygen Detector, 0.5s Fast Response, with Vibration, Visual & Sound Alarms, Rechargeable O2 Monitor, Dust and Explosion Proof, for Work, Home - Orange

GasDoc DS-399 Carbon Monoxide Detector, 168HR Standby, Rechargeable 3-in-1 Portable CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent - Dark Blue

DS-100 Portable Carbon Monoxide Detector for Travel, 140H Standby, CO Detector with Magnetic Back, Rechargeable 3-in-1 CO Monitor with Audible & Visual Alarm for Camping, Hotel, Car & RV

Combination Smoke and Carbon Monoxide Detector Alarm, 2-Pack Beeps Warning Smoke and CO Alarms for Basements Travel Home Office House Bedroom Living Room Car, Battery Operated, Comply with UL 217/2034

First Alert SCO5RVA Battery Operated Combination Carbon Monoxide and Smoke Alarm

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