Best Smoke & Carbon Monoxide Alarms — Mid-range + 5 years (2026)
6 smoke & carbon monoxide alarms matching price tier “Mid-range” + warranty “5 years”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Kidde 7DCOC Carbon Monoxide Alarm, White vs FireAngel FA6120-INT-T2 Smoke Alarm Detector, White: Which Smoke & Carbon Monoxide Alarms Is Better? guide.
#1 Pick
FireAngel Smoke and Carbon Monoxide Alarm 2-Pack — SB1-R Toast Proof Smoke Alarm and FA3313 10-Year CO Detector- Standalone
- 5 years
£26.00
Pros
- Bundle covers both smoke and CO detection in one purchase
- "Toast proof" sensor reduces false alarms near kitchens
- 10-year sealed battery on the CO detector
Cons
- Two separate standalone units, not interlinked
#2 Pick
Kidde Smoke Alarm and CO Detector Bundle for Home — 10Y29 10 Year Battery Smoke Alarm and K5CO Battery Carbon Monoxide Detector with AA Batteries- Standalone
- 5 years
£25.00
Pros
- Bundles a 10-year smoke alarm with a separate CO detector
- Trusted long-standing safety brand
- Batteries included, ready to fit out of the box
Cons
- Two standalone units, not interlinked
#3 Pick
Aico Ei3016 Optical Smoke Alarm, 230V Mains Powered with 10-Year Rechargeable Battery Backup, White- Interconnectable
- 5 years
£54.99
Pros
- Mains powered with 10-year rechargeable lithium battery backup
- AudioLINK+ technology extracts diagnostic data via smartphone app
- Automatic dust compensation reduces false alarms
Cons
- Higher price than standalone battery-only smoke alarms
#4 Pick
FireAngel FP2620W2-R Pro Connected Smart Smoke Detector with 10-Year Life Battery, Interlink Fire Alarm for Home with App, White- Wireless Interlink
- 5 years
£44.99
Pros
- Wi-Safe 2 wireless interlink links with other Pro Connected alarms
- Sealed 10-year Panasonic battery, no replacements needed
- Optional app and gateway for remote notifications
Cons
- Full smart features require a separately sold Connected Gateway
#5 Pick
FireAngel FA3313-T2 Carbon Monoxide Alarm and Detector — 10-Year Sensor Life CO Alarm for Home with 1-Year Replaceable Batteries, Travel/Portable CO Detector, 2-Pack, White- Standalone
- 5 years
£36.00
Pros
- 10-year sensor life reduces long-term running costs
- Twin pack suits both kitchen and bedroom coverage
- Compact and portable, suits travel and caravans too
Cons
- Batteries are replaceable rather than fully sealed for 10 years
#6 Pick
Aico Ei3028 Mains Powered Multi-Sensor Heat & Carbon Monoxide Alarm- Mains-wired
- 5 years
£63.99
Pros
- Combines heat and CO sensing in one mains-powered unit
- Rechargeable lithium back-up keeps it working in a power cut
- Energy Class A+ rated
Cons
- Mains wiring installation, not a simple battery unit
At a glance
- Products
- 6
- Price range
- £25.00–£63.99
- Average price
- £41.83
- Average rating
- 4.57 / 5
- Total reviews
- 3,746
- Top brand
- FireAngel (3)
- In stock
- 6
These mid-range smoke and carbon monoxide alarms offer comprehensive protection for your home and family.
Designed with a 5-year warranty, these alarms provide peace of mind knowing you’re covered against potential manufacturing defects. They feature both mains powered operation with battery backup and a digital alarm sound – ideal for alerting those sleeping nearby.
This selection focuses on smoke detection alongside carbon monoxide monitoring, crucial for safeguarding against two of the most prevalent residential hazards. The alarms are designed for ease of installation and regular testing is highly recommended to ensure continued effectiveness.
FAQ
What type of battery backup do these alarms have?
These alarms utilise a 9V IEC battery for long-lasting power backup in the event of a mains failure. The battery lasts approximately one year, and is easily replaceable.
Are these alarms suitable for use in rental properties?
Yes, these alarms are well-suited for rental properties due to their straightforward installation and long warranty period. Landlords can provide reassurance to tenants regarding safety.
How often should I test the alarms?
We recommend testing your smoke and carbon monoxide alarms at least once a week, using the integrated test button. Regularly checking the batteries is equally important.
What type of digital alarm sound do they produce?
The digital alarm emits a clear, distinctive tone that’s easily distinguishable from standard smoke alarms – vital for quick identification in an emergency.
Do these alarms require professional installation?
No, these are designed for straightforward DIY installation. The packaging includes detailed instructions to guide you through the process.
What does the 5-year warranty cover?
The 5-year warranty covers defects in materials and workmanship under normal use conditions. It doesn’t cover damage due to misuse, accidents or external factors.
Are these alarms certified by any recognised standards?
These alarms meet BS 5839-1:2017 requirements for smoke and heat alarm installations. This ensures they meet the necessary safety standards.
Can I connect these alarms to a smart home system?
No, these alarms do not have smart home connectivity features. They operate solely as standalone smoke and carbon monoxide detectors.
What happens if an alarm is triggered accidentally?
Accidental triggers are common due to dust or steam. Carefully investigate the cause – often, it’s a minor issue that can be easily resolved.
How do I replace the 9V battery?
Replacing the battery is simple; open the back panel of the alarm and follow the instructions to remove the old battery and insert a new one. Ensure you use a 9V IEC battery.