10 Best Mains Fire Alarm in The UK

Last updated on 02/07/2025

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Best Choice

9.8

Exceptional

Kidde

Kidde Firex KF Series Mains Powered Fire Alarms Kit (3 Smoke & 1 Heat) with Alkaline Back-up Battery

Why We Love It

Ideal for home installation.
Reliable mains power support.
Includes a 6-year 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

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

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

Dual sensors for comprehensive fire detection.
Mains powered with reliable back-up.
Offers wireless interconnection and data extraction.

Main Highlights

Contains both an Optical and Heat sensor for a total fire response
Mains powered with 10 year rechargeable lithium cell back-up
Add an Ei3000MRF module for wireless interconnection and data extraction
Compatible with other Aico mains powered units
AudioLINK data extraction technology

FireAngel FP2620W2-R Pro Connected Smart Smoke Detector with 10-Year Life Battery - Interlink Fire Alarm for Home with App, White, 1-Pack

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Why We Love It

10-year battery life.
Wireless link compatibility.
Rapid fire detection.

Main Highlights

SMART SMOKE DETECTOR: Featuring Thermoptek technology, multiple installation styles, and optional real time alerts, the wireless smart smoke alarm rapidly senses all types of fire, offering the highest level of protection for you and your family.
MULTI SENSOR TECHNOLOGY: Thermoptek technology combines the latest in optical sensing with thermal enhancement, responding to both slow-smouldering and fast-flaming fires in less than half the time compared to single-sensor smoke alarms.
WIRELESS INTERLINKED SMOKE ALARMS: The FP2620W2-R works perfectly as a standalone unit, but when wirelessly interlinked, it alerts you if any connected alarm detects danger. Compatible with Pro Connected Smoke, Heat, and Carbon Monoxide (CO) Alarms.
ALARM LOCATION: When multiple connected alarms sound simultaneously, alerts from secluded areas will be heard across all devices. To find the source of the alert, press the test button on any device to silence all but the initiating alarm.
ON THE GO ALERTS: Sync the FP2620W2-R smoke detector with the FireAngel Pro Connected Gateway to enable enhanced diagnostics and receive real-time notifications on your smartphone or via email through the FireAngel Pro Connected App.
SAFETY ASSURED: The FP2620W2-R FireAngel smoke alarm includes a 10 year Panasonic battery and is certified with CE and UKCA marks. It meets British Safety Standard EN14604:2005+AC:2008 and is designed for domestic use, backed by a 5-year warranty.
FIREANGEL HOME SAFETY: In addition to our smart fire alarms for home use, we offer a wide range of other safety products designed to protect you and your family. Choose from smart and wireless devices, as well as standard smoke, heat, and CO alarms.

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.

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)

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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.

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

3% Off

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

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

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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

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

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Why We Love It

Fits existing baseplates for ease.
Rapid smoke detection feature.
Long-lasting, tamper-proof batteries.

Main Highlights

SMOKE DETECTORS FOR HOME: The optical smoke alarm makes protecting your home simple. Its optical sensing chamber 'sees' smoke as it enters the alarm, providing a fast response to slow burning fires with thick white smoke.
FEWER NUISANCE ALARMS: The advanced optical sensor ensures the FireAngel smoke alarm is less prone to false alerts from cooking fumes. Avoid placing near bathrooms or kitchens.
10-YEAR BATTERY: Each smoke alarm is fitted with a 10-year sealed battery, offering protection for the lifetime of the device without needing to change the batteries.
EASY INSTALLATION: Fitted with a removable base plate, secure it to the ceiling using the screws provided. Push and twist to secure the device. The base plate is identical to the ST622, making replacements quick and easy.
SAFETY ASSURED: The FA6620 smoke alarm holds CE and UKCA marks and is certified to BS EN 14604:2005+AC:2008. Suitable for domestic premises, including leisure accommodation vehicles, it comes with a 5-year warranty.

8.8

Excellent

We scanned 1760 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 Kidde, Aico, Fireangel, Jemay, Andyssey, Firechief, 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 8801 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 Kidde Firex KF Series Mains Powered Fire Alarms Kit (3 Smoke & 1 Heat) with Alkaline Back-up Battery. We love many things about this product by Kidde. What sets it apart from the competition is Ideal for home installation. , Reliable mains power support. , Includes a 6-year warranty. .
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 Mains Fire Alarm and the best cost-to-value ratio 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 Modelat Firechief with a 4% 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

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We scanned 1760 products

We concluded that: