Best Deta Carbon Monoxide Alarm 1121 Deals Online in the UK (13 Deals Found)

Last Updated - 01/02/2026 Sort By:

Best Choice
X-Sense

New
X-Sense Carbon Monoxide Detector, Replaceable Battery Powered CO Alarm with Digital Display, Portable Carbon Monoxide Al
10-Year Lifespan: Protect your loved ones from the silent threat of carbon monoxide for an entire decade with this relia

£11.99 £15.99
Best Value
Kidde

New
Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home
BATTERY POWERED: Each alarm comes equipped with 2x AA batteries included, allowing your alarm to be set up immediately u

£13.49 £18.99
New
Deta 1169 Carbon Monoxide Alarm Mains with 9V Battery Backup
Interlinkable up to 12 optical, heat and carbon monoxide alarms in total for larger properties. Alarm head is easily con

£51.85
Fireangel

New
FireAngel FA6812 Digital Carbon Monoxide Detector with LCD Screen, 10-Year CO Alarm Sensor, Portable Carbon Monoxide Ala
CARBON MONOXIDE ALARM: The 10-year electrochemical sensor detects dangerous carbon monoxide (CO) levels, alerting with 4

£18.99 £19.99
New
Deta 1139 Carbon Monoxide Alarm 10 Year Battery CO Detector LCD Display
ATest/Silence button allows easy operation and regular testing. Certified toBS EN 50291-1:2018 withUKCA & CE approval, t

£25.99
15% Off
WISUALARM

New
Carbon Monoxide Detector, 10 Years Battery Carbon Monoxide Alarm, CO Alarm with Test/Silence Button,Carbon-Monoxide-Dete
【Accurate and Reliable】- This CO alarm is equipped with a 10-year sensor that can give a high and stable performance of

£13.59 £15.99
19% Off
Fireangel

New
FireAngel Carbon Monoxide Alarm and Detector - FA6813 10-Year Sensor Life CO Alarm for Home with AA Batteries - Travel,
CARBON MONOXIDE ALARMS FOR HOME USE: The advanced electrochemical sensor detects dangerous levels of carbon monoxide (CO

£14.50 £17.99
New
Deta 1139 Carbon Monoxide Alarm – 10‑Year Sealed Battery, Digital Display
Deta 1139 – Battery-Powered Carbon Monoxide (CO) Alarm with 10-Year Sensor & Sealed Battery. Model: 1139 (by Deta Electr

£17.01
Kidde

New
Kidde 2030-DCR Compact 10 Year Life Carbon Monoxide Alarm with AA batteries
Accurately alarms from 50 ppm of CO in the air

£13.99
Kidde

New
Kidde 5DCO Digital Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life Digital Display CO Alarm -
Compact, slimline case. Dimensions = 127mm x 73mm x 39mm. Weight = 170g.

£15.99
Kidde

New
2 Pack Kidde 2030-DCR Compact 10 Year Life Carbon Monoxide Alarm with AA batteries
10-year Carbon Monoxide sensor accurately detects from 50 ppm of CO gas in the air and emits a loud, clear alarm to aler

£24.94
XINDUM

New
Carbon Monoxide Detector with LCD Digital Display, CE Certified CO Alarm with Sealed in 10 Year Battery, Standalone Audi
Accurate Relialbel CO Detector: Comply with EN 50291 standard, CE Certified Carbon Monoxide alarm, equipped with high ac

£27.99
XINDUM

Used
Carbon Monoxide Detector with LCD Digital Display, CE Certified CO Alarm with Sealed in 10 Year Battery, Standalone Audi
Accurate Relialbel CO Detector: Comply with EN 50291 standard, CE Certified Carbon Monoxide alarm, equipped with high ac

£19.59

13 Deta Carbon Monoxide Alarm 1121 deals are available from: Amazon, eBay stores, starting from £11.99.
The biggest discount we found is 29% on Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home at Amazon.
The lowest price we found is £11.99 while the highest is £51.85.
Prices for the best Deta Carbon Monoxide Alarm 1121 deals average at £20.76.
Last updated on February 1, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Deta Carbon Monoxide Alarm 1121.