10 Best Mains Fire Alarm in The UK

Last updated on 13/08/2025

Advertising disclosure

Best Choice

9.8

Exceptional

Aico

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

Smoke Alarm with Wireless Interlink - Mains Powered Fire Alarm With 10 Year Battery Backup - Kitemark Certified to BS EN 14604 - Wirelessly Interlink with Firechief Alarms for Home - FSM10W Model

Free Shipping

Why We Love It

Reliable smoke detection technology.
Seamless interlinked safety system.
10-year battery backup included.

Main Highlights

Optical smoke sensing technology and automatic dust compensation - the smart smoke detector technology means that these units are less prone to false alarms and are a reliable safety feature for homes
Wirelessly interlink with up to 40 alarms - fire alarms for home settings are essential and interlinked smoke alarms and a heat alarm create a seamless safety system to protect your loved ones
Mains powered with 10-year battery back up - this mains and battery smoke alarm is mains powered for reliability but also supplied with a 10-year sealed smoke alarm battery for peace of mind
Loud audible alarm & LED indicators - this reliable mains smoke alarm immediately notifies you of potential danger. These smoke detectors for home give you time to evacuate and get to safety
Kitemarked and with a 5-year warranty - the qualifying Firechief heat, smoke and carbon monoxide alarm range comes with a 5-year warranty and this smoke alarm is kitemarked, certifying its top quality
Helping you manage fire risks since 1963 - We want to make the world a safer place with effective fire safety equipment. Your peace of mind means a lot to our family business and our wonderful team

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

Free Shipping

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

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

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

Free Shipping

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.

Andyssey GS517A Wired Smoke Alarm Mains powered, Interlinked Mains Smoke Detector 1 Year Replaceable Battery Back-up, Fire Alarm with Silence Button, EN 14604 Standard (2-PACK)

Free Shipping

Why We Love It

Advanced fire hazard awareness.
Comprehensive fire safety modes.
Easy installation and operation.

Main Highlights

Advanced Photoelectric Smoke Detection: This mains smoke alarm uses cutting-edge photoelectric technology to detect slow-smoldering fires with thick, black smoke, providing early warning for fire hazards that might otherwise go unnoticed.
Reliable Power with Battery Backup: Operating on AC220~240V/50Hz power with a DC9V battery backup, this hard wired smoke alarm ensures continuous protection, even during power outages. It also alerts you when the battery is low, for added peace of mind.
Silent and User-Friendly Features: Enjoy a hassle-free experience with easy installation, a convenient mute function, and a simple test mode for regular maintenance. The user-friendly design of GS517A hard wired smoke detectors ensures effortless operation and testing.
Efficient Interconnection for Enhanced Safety: This smoke alarm system can be interconnected with up to 12 devices, providing synchronized alerts across multiple locations in your home, office, or building for comprehensive fire safety coverage.
Meets Strict Safety Standards: Certified to EN14604:2005/AC-2008 standards, this mains fire alarm meets high-quality requirements for sensitivity, sound volume, and operational performance, ensuring reliable and accurate fire detection.

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

Firex KF30 Kidde Firex Alarm, White

Free Shipping

Why We Love It

Interlinks with multiple alarms.
Tamper resistant design.
Combined test and hush.

Main Highlights

Interlink with up to 23 other Firex or Kidde Mains alarms
Tamper resistant locking device
Mains operation 9v battery backup
Combined test and hush button
Identifies source unit within interconnecting network

Aico EI144e Heat Alarm Mains / 9V Battery Back Up, White

5% Off

Why We Love It

Heat sensor ensures high safety.
Battery backup for uninterrupted operation.
Easy installation with Easi-fit base.

Main Highlights

Heat sensor – responds to heat build-up from large flaming fires. Thermistor sensor triggers at 58°C
Mains powered 230V AC, 50Hz with replaceable 9V Alkaline battery back-up. Easi-fit base for quick and simple installation
Indicator light - Green – Power / Red – Alarm or fault. Test button simulates a high temperature to check the thermistor, electronics and horn
Alarm sound level: 85dB(A) at 3m. Kitemarked KM 83678
BS EN14604:2005. BS 5446-2:2003. CE and UKCA certified
Dimensions: 150mm diameter x 60mm deep

8.8

Excellent

Save 5%

We scanned 302 products

We reviewed these offers relevant to the Mains Fire Alarm 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 Aico, Firechief, Kidde, Jemay, Andyssey, DETA, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Mains Fire Alarm in the market, we considered we took a deep dive into 1511 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 Aico EI146e Set of 2 Mains Hard Wired Smoke Alarms with 9V Battery Back Up , White. We love many things about this product by Aico. What sets it apart from the competition is Compelling gripping content, Quality production values, Exceptional cast performances.
The best value product for most shoppers and where user satisfaction is continuously the highest is Smoke Alarm with Wireless Interlink - Mains Powered Fire Alarm With 10 Year Battery Backup - Kitemark Certified to BS EN 14604 - Wirelessly Interlink with Firechief Alarms for Home - FSM10W Model by Firechief based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Mains Fire Alarm and the best cost-to-value ratio is Aico EI144e Heat Alarm Mains / 9V Battery Back Up, Whiteat Aico with a 5% discount.
Our list of the best Mains Fire Alarm 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 Mains Fire Alarm in The UK

Related Deals You Might Like for Mains Fire Alarm

FireAngel Mains Smoke Alarm - SW1-R Mains Powered Optical Smoke Detector with Backup Battery - Wired, Interlinked Smoke Alarms for Home with Test Button and LED Indicators - White

Kidde Firex KF20 Optical Smoke Alarm - Mains Operated with Battery Back Up

FireAngel SB1-R Smoke Alarm - Toast Proof, Optical Smoke Alarms for Home with Replaceable Battery and Test/Silence Button - Early Smoke Detector Fire Alarm - 90 x 35 mm - White

X-Sense Smoke Alarm for Home, 10-Year Battery Fire Alarm, LED Indicator & Silence Button, Smoke Detector Battery Operated, Conforms to EN 14604 Standard, SD11

FireAngel Optical Smoke Alarm 2-Pack - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - White

Replacement for Kidde KF10 Mains Powered Smoke Alarms

FireAngel Heat Alarm for Kitchen with 10 Year Sealed for Life Battery - FA6720-R Heat Detector for Kitchen, Home, Caravan, Attic, Garage - Replacement for HT-630 Heat Alarms - White

BG Electrical Optical Smoke Alarm, 230VAC Mains Powered Natural White

New Kidde FireX KF20 Mains Powered Optical Smoke Alarm Fire Detector with 9V Battery Backup

FireAngel SB1-R Smoke Alarm - Toast Proof, Optical Smoke Alarms for Home with Replaceable Battery and Test/Silence Button - Early Smoke Detector Fire Alarm - 90 x 35 mm - White - 2-Pack

We scanned 302 products

We concluded that: