Best Smoke Alarms Deals Online in the UK (25 Deals Found)

Last Updated - 14/09/2026 Sort By:

Best Choice
Fireangel

New
FireAngel Optical Smoke Alarm 2-Pack - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replaceme
SMOKE DETECTORS FOR HOME: The optical smoke alarm makes protecting your home simple. Its optical sensing chamber 'sees'

£22.14 £22.95
BLACK+DECKER

New
BLACK+DECKER - Easy Install Smoke Detector Fire Alarm 2 Pack for Homes
SMOKE DETECTORS FOR HOME: Keep your home safe with an optical smoke alarm that’s smart and responsive - its advanced sen

£10.99
New
2 x Home Fire Alarm Smoke Detector Gas Sensor Twin Pack with Batteries 10 Year
Each alarm uses optical smoke sensing technology, which is designed to help detect slow smouldering fires before they de

£8.49
Best Value
X-Sense

New
X-Sense Smoke Alarm for Home with 10-Year Sealed Battery, SD11, 1 Pack
Sensitive & Intelligent: The state-of-the-art photoelectric sensor, combined with an advanced intelligent chipset, this

£9.40 £14.60
New
Wireless Interlinked Smoke & Heat Alarm Kit UK Compliant - Build Your Own Bundle
Smoke & Heat alarms should be interlinked (All our kits are interlinked & tested before being dispatched). It is now rec

£26.98
ELRO

New
ELRO FS1801 smoke detector complies with European standard EN14604-4 pieces, pack of 4, White
10-YEAR PROTECTION: The battery of the 10-year smoke detector is replaceable. By replacing the battery, you can continue

£20.99
BLACK+DECKER

New
BLACK+DECKER - Smoke Alarm for Homes
SMOKE DETECTORS FOR HOME: Keep your home safe with an optical smoke alarm that’s smart and responsive - its advanced sen

£6.99
New
X2 FireAngel Optical Alarm Smoke Sensor- FA6615-R-T2 . 5 Year Batteries Included

£29.99
Status

New
STATUS 9V Photoelectric Smoke Alarm, Battery Operated Fire Detector for Home Bedroom Kitchen Hallway, Includes 9V Batter
Status photoelectric smoke alarm for reliable fire detection Status provides peace of mind with this 9V photoelectric sm

£6.97
New
Home Fire Alarm Smoke Detector Fireangel Pack with Battery.
✔ 1 x FireAngel SB1-R Smoke Alarm. ✔ 2 x FireAngel SB1-R Smoke Alarms. Advanced photoelectric sensor “sees” smoke as it

£20.49
32% Off
Fireangel

New
FireAngel SB1-R Optical, Battery Powered Smoke/Detector Alarm for Home
EARLY WARNING SMOKE DETECTOR: The optical smoke alarm makes protecting your home simple. The optical smoke sensing chamb

£14.00 £20.49
ELRO

New
ELRO FS1805 | 2-Piece Smoke Alarm Set | Magnetic Mounting Kit | 5-Year Battery | Complies with European Standard EN14604
This gas smoke fire alarm has wide range of features

£16.99
New
2X Smoke Alarm 10 Year Life Battery Smoke Detector & Fire Alarms Sensor
The detector features a self-test function, allowing users to check whether the device is working normally. It adopts a

£14.99
14% Off
Fireangel

New
FireAngel ST-622T Thermoptek Smoke Alarm – 10 Year Sealed Lithium Battery, Multi-Sensor Optical Detection, Easy Install,
THERMOPTEK TECHNOLOGY: The FireAngel ST-622 Thermoptek smoke alarm uses patented multi-sensor optical smoke alarm techno

£17.99 £20.99
New
10 Year Life Home Fire Alarm Smoke Detector Gas Sensor with Batteries
It adopts a compact white ABS design and is suitable for ceiling installation. Smoke Alarm Detector. The detector featur

£7.99
WISUALARM

New
Smoke Alarms for Home, 10-Year Battery, Smoke Alarm, Fire Alarm with Test/Silence Button, Smoke Detector Certificated by
LONG-LASTING POWER: Features a sealed 10-year battery that eliminates the need for frequent battery changes whilst provi

£21.99
New
Smoke Alarm 10 Year Life Battery Smoke Detector & Fire Alarms Sensor 1PCS
🔥 Smoke Alarm 10 Year Life Battery 🔥. 📢Loud 85dB Alarm. After 10 years, simplyreplace the battery – no need to buy a

£6.09
New
Wireless Interlinked Smoke Heat CO Alarms 10 Year Battery Similar to HiSPEC
Wireless Interlinked Alarm Bundle. Wireless Interlinked Alarms | All LINKD Alarms wirelessly interlink with each other.

£119.99
New
Aico EI3024 Multi-sensor Smoke Fire Alarm Detector expires 12/2036 Genuine*
The Aico EI3024 Multi-sensor Smoke Fire Alarm Detector is a reliable and genuine product manufactured in the United King

£39.99
New
3x Home Fire Alarm Independent Smoke Detector Gas Sensor Smoke Alarm UK
The product is a set of three independent smoke detectors by FireAngel, manufactured in the United Kingdom. Each detecto

£10.00
Used
Google Nest Protect [EXPIRED] 2nd Gen Wired Smoke & Carbon Monoxide Alarm
(Pre-owned smart smoke and carbon monoxide alarm. Google Nest Protect 2nd Generation – Hard Wired / 230V Mains Powered.

£4.99
New
Smoke Alarm 10 Year Battery
New and sealed Easy to use test button with hush function Battery expiration 2036 Toast proof function to prevent false

£8.50
New
Home Fire Alarm Independent Smoke Detector Gas Sensor Smoke Alarm Fireangel UK
The FireAngel UK Home Fire Alarm is an independent smoke detector with a gas sensor that provides accurate and sensitive

£4.25
Used
Aico Ei141RC Mains Ionisation Smoke Alarm
The Aico Ei141RC Mains Ionisation Smoke Alarm is a reliable and efficient smoke detector designed to ensure the safety o

£20.34
New
Firehawk FHB10 Long Life Optical Smoke Alarm X-PROFILE 10 Year Battery 05/2036
Red LED power and alarm indicator. Optical smoke detection. Alarm silence button for nuisance/false alarms. Sealed-in 10

£12.94

25 Smoke Alarms deals are available from: Amazon, eBay stores, starting from £4.25.
The biggest discount we found is 36% on X-Sense Smoke Alarm for Home with 10-Year Sealed Battery, SD11, 1 Pack at Amazon.
The lowest price we found is £4.25 while the highest is £119.99.
Prices for the best Smoke Alarms deals average at £19.38.
Last updated on September 14, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Smoke Alarms.