Best Combination Smoke Carbon Monoxide Detectors Deals Online in the UK (25 Deals Found)

Last Updated - 19/06/2026 Sort By:

Best Choice
X-Sense

New
X-Sense Combination Smoke and Carbon Monoxide Alarm with LCD Display & 10-Year Battery, Smoke Alarm for Home Compliant w
Attention: The SC07 Combination Smoke and Carbon Monoxide Alarm is not compatible with the SBS50 Base Station and does n

£25.07 £35.99
Fireangel

New
FireAngel Combination Smoke and Carbon Monoxide Alarm for Home - SCB10-R, 10 Year Life, Dual Carbon Monoxide Detector an
DUAL PROTECTION: This combination carbon monoxide (CO) and smoke detector offers vital protection against both CO and fi

£29.99
New
Kidde 5CO - 10 Year Life LED Carbon Monoxide Detector / CO Alarm with Batteries
The Kidde 5CO carbon monoxide alarm features a 10 year sensor life and is supplied with 2 x Duracell AA alkaline batteri

£15.12
Best Value
X-Sense

New
X-Sense Combination Smoke and Carbon Monoxide Alarm with English Voice Alerts, Smoke Alarm for Home with Replaceable Bat
Important Note: The XP0A-SR Combination Smoke and Carbon Monoxide Alarm does not support interconnectivity or app functi

£22.49 £23.99
New
Carbon Monoxide (CO) and Smoke Combination Detector Alarm - Kidde K10SCO
The Kidde K10SCO provides both smoke and carbon monoxide detection from one space-saving unit, and is backed by a 10 yea

£22.90
Yezala

New
Smoke & Carbon Monoxide Alarm with Digital LCD Display, Combination Smoke Alarm and Carbon Monoxide Detector Replaceable
DUAL PROTECTION: Features both smoke and carbon monoxide detection capabilities in a single unit with clear digital LCD

£16.99
Kidde

New
Kidde 10SCO Combination Smoke and Carbon Monoxide Alarm with Voice Notification, white
Voice alarm feature

£24.90
New
Digital LCD Carbon Monoxide (CO) and Smoke Combination Detector Alarm Outdoor
Always Stay Safe: Protect yourself from harmful CO wherever you go with this easy-to-carry portable carbon monoxide dete

£22.99
Kidde

New
Kidde K10SCO Combination Smoke & CO Alarm with Voice Notification
Combine two detectors in one space-saving unit with the Kidde 10SCO Carbon Monoxide and Smoke Alarm

£24.40
New
Poisoning Smoke & Carbon Monoxide Detector Combination Smoke CO Sensor Alarm wit
This state-of-the-art alarm combines smoke and carbon monoxide detection to ensure comprehensive safety. ### Poisoning S

£15.99
Kitire

New
2 Packs Smoke and Carbon Monoxide Alarm, 85dB Loud Smoke Alarm and Carbon Monoxide Detector with Replaceable Battery & D
【DUAL-PRECISION SENSING | INDEPENDENT PROTECTION】 Utilising a premium Electrochemical sensor for Carbon Monoxide (CO) an

£37.99
AEGISLINK

New
Smoke & Carbon Monoxide Alarm with Digital LCD Display, AEGISLINK Combination Smoke and CO Alarm Detector with 10-Year L
Informative LCD shows real-time CO concentrations and battery power to monitor for CO leaks and battery level; to save p

£39.99
New
Carbon Monoxide Alarm 10 Year life CO Detector Kidde 2030-DCR -
Kidde 2030-DCR CO Detector Carbon Monoxide Alarm. This leading CO alarm has been updated to comply with EN50291-1:2018 s

£15.17
22% Off
X-Sense

New
X-Sense Wi-Fi Combination Smoke Alarm and Carbon Monoxide Alarm with Replaceable Battery, Smart Fire Alarm Compatible wi
Attention: The SC07-WX Wi-Fi Smoke and Carbon Monoxide Alarm is not compatible with SBS50 base station and does not supp

£34.95 £44.99
New
Kidde K10SCO 10 Year Long-Life Smoke & Carbon Monoxide Combination Alarm
Test/Reset button to allow regular testing of alarm function.

£25.99
Safelincs

New
Kidde 10SCO Combination 10 Year Life Carbon Monoxide and Smoke Alarm Twin Pack
Smoke alarm and CO alarm in one unit for space saving and convenience. Twin pack of two units.

£43.95
New
Carbon Monoxide Detector Warning Alarm Sensor LED Digital Battery Powered
Carbon Monoxide Detector Alarm Sensor – LED Digital Display, Battery Powered. This detector features a smart alarm syste

£5.25
New
FireAngel FA6813 Carbon Monoxide Alarm Detector 2-Pack 100% ORIGINAL NEW ⭐⭐⭐⭐⭐
2 x FireAngel FA6813 Carbon Monoxide Alarms. Product TypeCarbon Monoxide Alarm / CO Detector. Install or place the alarm

£19.95
New
Carbon Monoxide Detector Warning Alarm Sensor LED Digital Battery Powered Uk
Its battery-powered design makes it easy to install anywhere—no wiring required.

£4.25
New
Prosafe Carbon Monoxide Alarm Battery Powered CO Detector Home Safety UK
The Prosafe Carbon Monoxide Alarm by GLORIA is a reliable battery-powered CO detector designed for home safety in the UK

£10.99
New
Carbon Monoxide & Smoke Detector Combo Alarm LCD Display Battery Powered Interli
It uses a high‑accuracy electrochemical CO sensor and an infrared photoelectric smoke sensor for fast, stable and precis

£23.90
New
Kidde 5DCO 10 Year Life Digital Carbon Monoxide Detector / CO Alarm + Batteries
Alternative Product CodesK5DCO 5DCO NHDCO 5DCOC 900-0230. The 10 year Kidde digital display Carbon Monoxide alarm with s

£17.00
New
Carbon Monoxide Detector Warning Alarm Sensor LED Digital Battery Powered
Carbon Monoxide Detector – Digital CO Alarm with LED Display & Battery Operation. Advanced CO Detection: Alerts you inst

£5.12
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

£36.98
New
Kidde 5DCO / Nighthawk NHDCO 10 Year Digital Carbon Monoxide Detector / CO Alarm
The Kidde 5DCO battery-powered carbon monoxide alarm features a 10 year lifespan and a sleek, slimline case which can be

£19.99

25 Combination Smoke Carbon Monoxide Detectors deals are available from: Amazon, eBay stores, starting from £4.25.
The biggest discount we found is 30% on X-Sense Combination Smoke and Carbon Monoxide Alarm with LCD Display & 10-Year Battery, Smoke Alarm for Home Compliant with EN 14604 and EN 50291 Standards, SC07 at Amazon.
The lowest price we found is £4.25 while the highest is £43.95.
Prices for the best Combination Smoke Carbon Monoxide Detectors deals average at £22.49.
Last updated on June 19, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Combination Smoke Carbon Monoxide Detectors.