Best smoke detectors
After 10 hours of research and a thorough review of 25 models, we have determined that the X-Sense SC 01 is currently the best carbon monoxide detector on the market due to its excellent price/performance value.
- Our choice
X-Sense CD01
This detector is effective in detecting carbon monoxide and smoke. Therefore, it is an ideal all-purpose solution. Its LCD screen is a plus.
The X-Sense DC01 is, in our opinion, the ideal solution if you need a smoke detector and a CO detector. It also has an LCD screen that allows you to follow the concentration of carbon monoxide in real time, as well as knowing the remaining autonomy (planned for 10 years) and the operating status of the detector. It also compliant with UL 2034 Standard. A dedicated button is provided for the test function.
- Best cheap
Kidde KN-COPP-B-LPM
This model is the simplest solution in our selection. It is quite a classic detector, which stands out for its low price.
The Kidde KN-COPP-B-LPM is the ideal solution for small budgets. Its battery operated CO alarm provides continuous monitoring of CO levels, even during power outages when many CO incidents occur. The digital display feature allows for easy viewing of carbon monoxide levels from 30-999 PPM (parts per million). It will also detect and store concentration CO levels as low as 11 and up to 999 PPM with its peak level memory display. It has a 10-year life and a 10-year limited warranty.
- Best of the best
Google Nest Protect 2nd generation
This is not only the best version of connected detectors, but also the best version of universal devices that work as a carbon monoxide detector and smoke detector.
Although its price is not the most affordable of this selection, it is justified by the connected nature and the dual function that only this device can boast. Indeed, you will be able to manage it not only from the dedicated app, but you’ll also benefit from a model that acts as both a CO detector and a smoke detector. It is designed to warn you when it detects carbon monoxide, the start of a fire, low batteries or a sensor failure, it is able to tell you exactly where the problem is coming from, whether by written messages, via your smartphone, or by voice messages through its speakers.
| Our choice | Best cheap | Best of the best |
 This detector is effective in detecting carbon monoxide and smoke. Therefore, it is an ideal all-purpose solution. Its LCD screen is a plus. X-Sense CD01 |  This model is the simplest solution in our selection. It is quite a classic detector, which stands out for its low price. Kidde KN-COPP-B-LPM |  This is not only the best version of connected detectors, but also the best version of universal devices that work as a carbon monoxide detector and smoke detector. Google Nest Protect 2nd generation |
Honorable Mentions
First Alert Battery-Operated Dual-Sensor Smoke Alarm
This dual-sensor, battery-operated smoke alarm detects both types of fires: fast-burning with high flames, plus slow-burning, smoldering fires that produce a lot of smoke.
It’s fairly compact with a five-inch diameter, though its overall design isn’t as streamlined as some other options. That said, safety comes first, and this smoke detector ranks high where it really counts. It’s UL-certified and features a 10-year lithium battery, along with an 85-decibel alarm.
9 volt battery for smoke alarms – what are the best batteries for smoke detectors? Our team is already researching this question
How to choose your personal carbon monoxide detector?
Carbon monoxide is one of the main risks of poisoning in the home.
While most people still think that it mainly affects old houses, this is not the case since this plague is actually caused by burnt fuels that originate in domestic appliances that we all have.
Stoves, boilers, lanterns: all these everyday objects represent a potential threat.
In order to help you choose the carbon monoxide detector most likely to meet your needs, we have listed a few criteria to consider:
Certification: these detectors can save your life. Thus, because they have a real safety significance, it is preferable to turn to models that bear the NF or CE certifications, guaranteeing a quality product and/or one that complies with European standards.
Power supply and autonomy: although this type of device can be powered from an outlet, we strongly encourage you to opt for battery-powered versions. Not only do they make the product easier to install, but most of them have a longer life span. This is especially true for the built-in batteries, which can be autonomous for about 10 years, after which you will unfortunately have to buy a new personal carbon monoxide detector…
The alarm: the role of your potential acquisition being to warn you in case of high concentration of CO, it must be able to communicate with you in a clear way. Therefore, make sure that it has an alarm of at least 80 dB and that it is able to warn you, with a visual and/or sound signal, when it is time to carbon monoxide detector battery replacement.
The test mode: this feature is obviously essential because it allows you to ensure that your detector is working properly and regularly. You won’t have any unpleasant surprises in terms of reliability.
Additional functions: while some models have an LCD screen that can clearly tell you the concentration of CO in the air, others have built-in smoke detectors to prevent potential fire hazards and even display a true connected nature, like speakers, thermostats or light bulbs.