10 Best Hard Wired Smoke Detector in The UK

Last updated on 13/08/2025

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Best Choice

9.9

Exceptional

Google

Google Nest Protect - Smoke Alarm And Carbon Monoxide Detector (Wired)

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Why We Love It

Detects both fire types.
Alerts phone from anywhere.
Easy installation and setup.

Main Highlights

The smoke alarm that others look up to. Nest Protect is a smoke and carbon monoxide alarm with a split-spectrum smoke sensor to detect both fast -and slow-burning fires. It can send an alert to your phone, speak to you and even light the way in the dark
It tells you what the danger is and where it is. The Split-Spectrum Sensor looks for both fast-and slow-burning fires. It also has a 10 year CO sensor so that it can tell you where poisonous, invisible CO is hiding
You'll know, from anywhere. Nest Protect can alert your phone when something is wrong at home. You'll receive a message if the alarm goes off, if the batteries start to run low or if a sensor isn't working. And you can silence your Nest Protect using the Nest app
Thoughtful, not annoying. Nest Protect checks itself over 400 times a day and lets you know if something is wrong. It also has Steam Check, so a nice, relaxing shower shouldn't cause your alarm to shout at you. And Pathlight, so it can light your way at night
Easy to install. Nest Protect only takes minutes to set up with your iOS or Android device. Once you've added each of your Nest Protects to your Nest account, they will automatically connect to each other. Nest Protect is also simple to attach to the ceiling, thanks to a neatly designed back plate

Aico EI146e Set of 2 Mains Hard Wired Smoke Alarms with 9V Battery Back Up , White

Why We Love It

Compelling gripping content.
Quality production values.
Exceptional cast performances.

Main Highlights

e146rc/2

Kidde 4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230v

11% Off

Why We Love It

7-year sealed battery longevity.
Early CO level warnings.
Digital or LED display options.

Main Highlights

Mains powered with 7 year sealed rechargeable lithium back-up battery
Provides end of life warning when the alarm has reached the end of it's life
LED display indicates alarm state, power supply status and low battery
Digital display provides early warning of intermittent and low CO levels and shows FIRE or CO when interconnected with other Kidde alarms
Option to have standard LED or digital display

Kidde Firex KF Series Mains Powered Fire Alarms Kit (2 Smoke & 1 Heat) with Alkaline Back-up Battery

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Why We Love It

Ideal for home-wide installation.
Includes backup battery feature.
Comes with manufacturer warranty.

Main Highlights

Ideal for installation throughout the home. Smoke alarm: Living rooms, bedrooms, hallways, landings, near (but not in) the kitchen. Heat Alarm: Kitchens, garages, unconverted loft spaces
Power: 230V mains powered with alkaline back-up battery
Back-up Battery: 9V alkaline battery (included)
Warranty: 6 year manufacturer's warranty
CE marked and Kitemarked. Smoke Alarm: certified to BS EN 14604: 2005. Heat Alarm: certified to BS 5446-2. Suitable for installations complying to BS 5829-6 2019 Grade D2
Smoke Alarm (H x D): 39 x 133mm. Heat Alarm (H x D) = 38 x 138mm

SAFE TECH Mains-powered Radio Interlink Smoke Alarm, D1 Rating Dual Interlink Hardwired Smoke Alarm With 10 Years Backup Battery, Electrician Approved Interlinked Wired Smoke Alarm BS EN 14604:2005

Why We Love It

Wired and wireless options available.
Ten years of reliable backup.
High-quality safety assurance guaranteed.

Main Highlights

【Wired or Wireless Connection 】This mains smoke alarm can be hardwired or wirelessly connected to up to 50, so when one alarm is triggered, they all sound and notify everyone of the emergency
【Hardwired and 10 Years Tamperproof Backup Battery Installed】The wired smoke alarm mains powered can be connected for use in addition to the 10 years tamperproof battery backup. When the power goes out in your house, the detector will still keep you safe
【High Quality Assurance】The mains powered smoke alarms have a 10-year sensor life and a reliable, high-performance chip to provide you with powerful protection. Products meet BS EN 14604:2005 standards, compliant with england, scotland and Wales Legislation to ensure peace of mind
【Customizable Wireless Network】This alarm can be interlinked with our interlinked range. You can create various grouped networks to meet your needs and interconnect alarms with the SAFE-TECH AJ Series, so that when one alarm is triggered, all of them go off, fully protecting your home and family
【Silence Mode】Worried about false positives? The smoke detector has a silence button, you can hold it down to calm it
Compatible with interlinked alarms and 7.0” panel

Wired Smoke Alarm, Interlinked Fire Alarm with LED Indicator and Silence Button, 10-Year Life Smoke Detector with 9V Battery Backup, Mains-powered, Conforms to EN14604 Standard, 2 Pack

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Why We Love It

Interconnections make testing simple.
Battery backup ensures reliability.
Silence mode minimizes disturbances.

Main Highlights

HARDWIRED SMOKE DETECTOR - Hardwired interconnected smoke alarm, can connect up to 12 alarms. It is more precise and stable than wireless interconnection.
INTERCONNECTION TEST - If the fire detectors are interconnected, you only need to press one test button during the weekly test, and the rest can be tested at the same time.
9V BATTERY BACKUP - The fire alarm is powered by a 120V power and a 9V backup battery. The alarm battary will last for at least 1 year, providing protection in the event of a power outage.
SILENCE MODE - Worried about false positives? The smoke detector has a silence button, you can hold it down for five seconds to calm it.
SIZE & CAPABILITY - 5” diameter x 1.6” depth, UL217 certified. Home fires start every 83 seconds, the fire detector can quickly identify the fire and allow the family to flee quickly.

Twin Pack Kidde Firex KF20 Mains Powered Optical Smoke Alarm with 9V Back Up Batteries | KF2 | 4973

Why We Love It

Interlinked network for safety.
Reduced energy consumption.
Tamper-resistant and durable.

Main Highlights

Mains-powered optical smoke alarm that can be interlinked with up to 23 other Kidde mains alarms, be they ionisation, optical or heat. Once interlinked, the detection of the relevant danger by an individual unit will sound across all the connected alarms.
Interlink with up to 23 Kidde Firex hard-wired alarms – all alarms sound if danger is detected
Mains operation – 9V Alkaline back-up battery supplied as standard
Reduced energy consumption – lower lifetime running costs (* compared to previous Firex alarms)
Combined Test/HushTM button allows regular testing of alarm function and can be used to temporarily silence nuisance alarms
Dust compensation and bug screen – reduces nuisance alarms
Alarm memory – identifies source unit within interconnecting network
Auto reset after activation
Tamper-resistant locking device prevents unauthorised removal without the use of a tool
Warranty 6 years, BSI certified to BS EN14604:2005 and CE tested and certified to 0086-CPD-535595 15 EN14604:2005

Deta 1163 Optical Smoke Alarm 240V with 9V Replaceable Battery Back Up (White)

Why We Love It

Reduced false alarms feature.
Quick and easy installation.
Dust contamination protection provided.

Main Highlights

Optical (photoelectric) smoke alarm - less prone to false alarms. Alarm volume >89dB(A) @ 3m. Silence / hush button
Power on / alarm status indication lights. Mains powered 220-240V AC 50Hz. Replaceable 9V PP3 battery back up (battery included)
Push fit mounting base for quick and easy installation - no separate base required. Dust cover to prevent dust contamination during building works. Up to 12 alarms from same manufacturer / range can be linked together
No radioactive content. Fitted gasket on back of base plate. Class II double insulated. Earth "park" terminal included in base. Manufactured to BS EN14604: 2005 / AC:2008. CE approved
Dimensions: 140mm diamter x 60mm deep

Aico Ei146e Optical Smoke Alarm AC mains power supply and 9V alkaline battery back-up.

Why We Love It

Reliable power supply options.
Easy remote control features.
Durable hardwire interconnect.

Main Highlights

AC mains power supply and 9V alkaline battery back-up.
Ei146e Optical Smoke Alarm
Remote Test, Locate and Silence compatible
Hardwire interconnect
Detector may vary

X-Sense Smoke and Carbon Monoxide Detector Wired Combination Smoke and CO Alarm Interconnected with Replaceable Backup Battery, XP04, 1 Pack

Why We Love It

Advanced sensor technology ensures safety.
Reliable power with battery backup.
Interconnects enhance home protection.

Main Highlights

MORE ACCURATE WITH SMART TECHNOLOGY - This wired smoke and carbon monoxide alarm combines an advanced photoelectric smoke sensor and Figaro CO electrochemical sensor to quickly detect smoking fire smoke and dangerous CO levels
Wired Alarm with Replaceable Backup Battery This combination of smoke and carbon monoxide alarm is AC wired with a 9V battery backup, so the alarm can continuously monitor smoke and CO even in the event of a power failure
Interconnects up to 18 units for full coverage: you can connect up to 18X-Sense wired alarm 2 in 1, so when an alarm is turned on, everything will ring together throughout your home
EASY INSTALLATION All mounting accessories are included for quick and easy installation in minutes
PREMIUM QUALITY - Made with high quality materials and components, this wired combo alarm provides a long service life of up to 10 years

8.7

Excellent

We scanned 1563 products

We reviewed these offers relevant to the Hard Wired Smoke Detector within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Google, Aico, Kidde, SAFE TECH, Jemay, DETA, X-Sense, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Hard Wired Smoke Detector in the market, we considered we took a deep dive into 7816 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Google Nest Protect - Smoke Alarm And Carbon Monoxide Detector (Wired). We love many things about this product by Google. What sets it apart from the competition is Detects both fire types, Alerts phone from anywhere, Easy installation and setup.
The best value product for most shoppers and where user satisfaction is continuously the highest is Aico EI146e Set of 2 Mains Hard Wired Smoke Alarms with 9V Battery Back Up , White by Aico based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Hard Wired Smoke Detector and the best cost-to-value ratio is Kidde 4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230vat Kidde with a 11% discount.
Our list of the best Hard Wired Smoke Detector is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Hard Wired Smoke Detector in The UK

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We scanned 1563 products

We concluded that: