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5 Best Carbon Monoxide Detectors of 2025

Last Updated - 07/07/2025

1
Best Choice
25% Off

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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.

X-Sense
25% Off

X-Sense Carbon Monoxide Detector, Replaceable Battery Powered CO Alarm with Digital Display, Portable Carbon Monoxide Alarm for Home with CO Peak Value Memory, XC0C-SR, 2-Pack

X-Sense

£22.99

£30.99
(25% Off)

More Details
Main highlights
- Versatile Placement Options: This carbon monoxide detector's freestanding design allows you to place it on any flat surface, such as a desk, bookshelf, or bedside table; screws are also included to mount it on the wall
- Sleek and Compact: Measuring just 75 × 142 × 32 mm, this small and unobtrusive carbon monoxide alarm looks good in any room, meaning you never have to compromise style for safety
- Intuitive to Use: Easily use this alarm even in urgent situations thanks to its simple, size-differentiated buttons; enjoy reliable access to critical functions like checking the peak CO levels or testing/silencing the alarm
- Easy to Understand: See the current CO level on a clear display; a tri-color LED tells you the alarm’s status at a glance: red for alarm, yellow for fault or low battery, and green for working normally
- 10-Year Lifespan: Protect your loved ones from the silent threat of carbon monoxide for an entire decade with this reliable 10-year CO sensor; powered by replaceable AA batteries that last 3 years
£22.99
£30.99 (25% Off)
2

✖
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.

X-Sense

X-Sense Wi-Fi Smoke Alarm for Home with Replaceable Battery, Smart Smoke Alarm Compatible with X-Sense Home Security App, Compliant with EN 14604 Standard, XS01-WX, 3-Pack

X-Sense

£69.99

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Main highlights
- Mini and Compact: Measuring only 78 × 48 mm, this wi-fi fire alarm with a replaceable battery is small and ultra-slim, making it easy to take along when you travel
- Direct 2.4 GHz Wi-Fi Connection: The battery-powered wi-fi smoke detector can be connected to the X-Sense Home Security app via the 2.4 GHz Wi-Fi network with a direct connection to the app, not compatible with the SBS50 base station
- Device Sharing Feature: Using the X-Sense Home Security app, you can share your devices with up to 12 different app accounts so the shared users can receive real-time push notifications
- Cost-Free Real-Time Notifications: Control the XS01-WX smart smoke alarm remotely via the mobile app and get quick app notifications for alarms, faults, and low battery warnings
- Attention: XS01-WX Wi-Fi Smoke Alarm is not compatible with SBS50 base station and does not support interconnect function
- 10-Year Sensor Life: This wi-fi smoke alarm comes equipped with a photoelectric sensor that detects slow-burning and smoldering fires and has a long lifespan of up to 10 years; compliant with EN 14604 standard
£69.99
3
15% Off

✖
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
15% Off

Natural Gas Detector, PT520B+ Rechargeable Gas Leak Detector with a 43.5cm Probe to Situate Leaks for Propane, Methane, LPG in RV or Home, Measuring PPM or%LEL - Orange

TOPTES

£67.99

£79.99
(15% Off)

More Details
Main highlights
- What You Get:1xPT520B+ Gas Leak Detector, 1xType-C Charging Cable, 1x Protective case, 1x User Manual
- Visual and Audible Alarm: TopTes PT520B+ could respond to gas leaks in 0.5s. The current gas concentration will be displayed in PPM or %LEL in four-digit reading. Besides, 11 colored bars and 75dB alarm will warn you out of danger and lead to gas leakage. Visual and audible alarm will react seriously as the gas concentration increase. Detection Range: 50-10000ppm
- User-Friendly Choice: TopTes PT520B+ gas leak detector adopts anti-slip housing and ergonomic grip design. Mute button could dissolve annoying high-dB alarm. Temperature sensor offers more reference for accurate gas detection. With 10-min inaction, the detector will turn off to save the power
- Rechargeable Gas Leak Detector: TopTes PT520B+ Gas Detector could quickly and accurately detect gas leaks from hard-to-reach areas for methane, propane, natural gas, LPG, etc. PT520B+ could recharge more than 3000 times. Note: Please allow 30 seconds of warm-up time before the operation
- Flexible 43.5cm Probe: TopTes PT520B+ could detect any hard-to-reach area with a 43.5cm gooseneck like gas stoves, natural gas lines, and basements. High and Low sensitivity could promote more accurate detection. Once gas leaks detected, you could turn it zero by ZERO button
£67.99
£79.99 (15% Off)
4
Best Value
30% Off

✖
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.

X-Sense
30% Off

X-Sense Smoke Alarm for Home, 10-Year Battery Fire Alarm, LED Indicator & Silence Button, Smoke Detector Battery Operated, Conforms to EN 14604 Standard, SD11, 2-Pack

X-Sense

£20.99

£29.99
(30% Off)

More Details
Main highlights
- Superior Construction: Made of fire-retardant ABS plastic material; the long-lived smoke detector horn alerts you with a loud 85-decibel alarm when smoke has been detected
- Sensitive & Intelligent: The state-of-the-art photoelectric sensor, combined with an advanced intelligent chipset, this smoke alarm for home can accurately detects dangerous smoke levels in seconds with fewer false alarms
- Reliable Auto-Check: The fire alarm monitors itself constantly and timely informs you of faults or a low battery for secure use
- High Quality: This premium smoke alarm conforms to EN 14604 standard
- 10-Year Battery Life: The low power consumption enables an incredible product life of up to 10 years with the built-in lithium battery; provides reliable uninterrupted 24/7 protection so you can sleep safely
£20.99
£29.99 (30% Off)
5

✖
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 PT-830S Rechargeable Gas Leak Detector with 36.8cm Flexible Probe, Range 0-10000 ppm, TFT Color Display & 3 Types Alarm, Natural Gas Leak Detector for Propane, Methane for Home or Industrial

TOPTES

£89.99

More Details
Main highlights
- User-Friendly & Durable Design: The PT-830S also features adjustable screen brightness, automatic screen off, a built-in flashlight, and USB-C rechargeability, offering up to 8 hours of battery life so you never have to worry about dead batteries. The PT-830S is designed for rugged environments with its explosion-proof and dust-proof properties. The package includes PT-830S gas detector, 1 charging cable, 1 storage box and 1 user manual
- Three Alarm Modes: The PT-830S natural gas detector features a 90dB buzzer, warning lights, and vibration alert. Each of them can be independently enabled or disabled by your needs. Additionally, the detector includes a quick mute function to silence the audible alerts when detecting, effectively eliminating any unnecessary noise during operation
- Multifunctional & Professional: The PT-830S gas detector menu includes zero calibration, zero suppression function, detailed data storage of operation processes, high and low sensitivity adjustment, and more. These functions ensure precise measurements and comprehensive record-keeping, making it a reliable partner for maintaining a safe environment
- High Precision with Flexible Probe: The PT-830S gas leak detector is equipped with a Figaro sensor that precisely measures gas concentrations ranging from 0 to 10,000 ppm. The 36.8cm gooseneck designed for hard-to-reach spots. It also offers customizable high and low alarm thresholds, enabling user to achieve professional-level accuracy when detecting methane, propane, butane, and other combustible gases
- Big TFT Color Display: With a large TFT color screen, PT-830S gas leak detector offers a easy reading. It displays a PPM value in real time, sound mode, sensitivity levels, battery status, and more. Different information can be distinguished by various colors, allowing users to quickly identify and understand data, even in poor lighting environments
£89.99

5 Best Carbon Monoxide Detectors of 2025

X-Sense Carbon Monoxide Detector, Replaceable Battery Powered CO Alarm with Digital Display, Portable Carbon Monoxide Alarm for Home with CO Peak Value Memory, XC0C-SR, 2-Pack

X-Sense Wi-Fi Smoke Alarm for Home with Replaceable Battery, Smart Smoke Alarm Compatible with X-Sense Home Security App, Compliant with EN 14604 Standard, XS01-WX, 3-Pack

Natural Gas Detector, PT520B+ Rechargeable Gas Leak Detector with a 43.5cm Probe to Situate Leaks for Propane, Methane, LPG in RV or Home, Measuring PPM or%LEL - Orange

X-Sense Smoke Alarm for Home, 10-Year Battery Fire Alarm, LED Indicator & Silence Button, Smoke Detector Battery Operated, Conforms to EN 14604 Standard, SD11, 2-Pack

TopTes PT-830S Rechargeable Gas Leak Detector with 36.8cm Flexible Probe, Range 0-10000 ppm, TFT Color Display & 3 Types Alarm, Natural Gas Leak Detector for Propane, Methane for Home or Industrial

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