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DHI-HY-SA20A 10pcs Smoke alarms

DHI-HY-SA20A_10_years_life_battery

Sale

18% OFF

SKU: DHI-HY-SA20A-10pcs

10 Jahre eigenständiger Rauchmelder

Easily Test/Silence
Large Detection Area
Hassle-free Installation
Certified to BS EN 14604

£129.99 £159.99

DHI-HY-SA20A 2pcs Smoke alarms

DHI-HY-SA20A-2pcs-R smoke alarm package

Sale

15% OFF

SKU: DHI-HY-SA20A-2pcs-R

10 Jahre eigenständiger Rauchmelder

Easy Installation
Features test and silence button
5 years warranty
Certified to BS EN 14604

£21.99 £25.99

DHI-HY-SA20A 5pcs Smoke alarms

DHI-HY-SA20A_smoke_alarm_one_package_of_five

Sale

15% OFF

SKU: DHI-HY-SA20A-5pcs

10 Jahre eigenständiger Rauchmelder

Large detection area
Hassle-free installation
Certified to BS EN 14604
Support mute by controller

£54.99 £64.99

smoke alarm large detection

Sale

SKU: S05-A-3pcs

10 Jahre eigenständiger Rauchmelder (versiegelte Lithiumbatterie)

Simple Installation
Insect-proof Design
10 Years Battery Lifetime
EN 14604 Compliance

£35.99 £41.99

DHI-HY-SA20A 2pcs Smoke alarms

DHI-HY-SA20A Standalone Smoke Alarm Package Box

Sale

18% OFF

SKU: DHI-HY-SA20A_2pcs_R

10 Jahre eigenständiger Rauchmelder

Long Battery Lifetime
Affordable Multi-packs
Simple Installation
Easily Mute

£21.99 £25.99

Wisualarm smoke alarm one piece

DHI-HY-SA20A_smoke_alarm_fewer_false_alarm

Sale

12% OFF

SKU: DHI-HY-SA30A

10 Jahre eigenständiger Rauchmelder

The Landlord’s Choice
10-Year Life Sensor
User-Friendly Design
BS 5839-6:2019 Grade F1

£13.99 £15.99

DHI-HY-SA20A_smoke_alarm_fewer_false_alarm

Sale

31% OFF

SKU: DHI-HY-SA30A-10pcs

10 Jahre eigenständiger Rauchmelder

The Landlord’s Choice
10-Year Life Sensor
User-Friendly Design
BS 5839-6:2019 Grade F1

£109.99 £159.99

HY-FT431LD_Flame_detection_network_camera_pro_thermal_image

Ausverkauft

16% OFF

SKU: BD-1G10S1C1G2H1C-R8

16-in-1 All-in-One Home Safety & Camera Kit

10-Room Coverage
Watch & Protect
Full Threat Defense
Instant Phone Alerts

£460.99 £550.99

S01 AA battery smoke alarm 5-year replaceable battery

Sale

47% OFF

SKU: S01-2pcs

2-Pack Smoke Alarms | 5-Year AA Battery Included

EN 14604 Standard
AA Battery Powered
Instant Test/Silence
Quick DIY Setup

£18.99 £35.99

KIT1-1S1C1H-R8 Interlinked smoke alarm and heat alarm and carbon monoxide alarm pre-connected

Sale

14% OFF

SKU: KIT1-1S1C1H-R8

3PC Interlinked Smoke & CO & Heat Alarm

3-in-1 Pre-Linked Kit
UK Law Compliant
Interlink Up to 24 Units
Instant Installation

£59.99 £69.99

3PC Interlinked Smoke Alarms

Sale

SKU: S04-R8-3pcs

3PC Interlinked Smoke Alarms

Link up to 24 devices
Simple test/silence button
Support remote control
BS 5839-6:2019 Grade F1

£49.99 £59.99

3PC Interlinked Smoke and Heat Alarm

Sale

16% OFF

SKU: KIT1-2S1H-R8

3PC Interlinked Smoke and Heat Alarm

Scottish 2022 Law Compliant
Pre-Connected Set
Premium Quality
5-Year Warranty

£49.99 £59.99

4PC Interlinked Smoke & CO & Heat Alarm

Sale

18% OFF

SKU: BD-2S1C1H-R8

4PC Interlinked Smoke & CO & Heat Alarm

Wireless Interconnected
Battery powered
5 years warrantty
BS 5839-6: 2019 Grade F1

£89.99 £109.99

BS-2S1C1H-R8 Interlinked Alarm Set New

BD-2S1C1H-R8_interlinked_detectors_set interconnectivity function

Sale

18% OFF

SKU: BD-2S1C1H-R8-NEW

4PC Interlinked Smoke & CO & Heat Alarm Set New

Interlinked Safety
BS 5839-6 Certified
10yr Battery Powered
Gateway Compatible

£89.99 £109.99

4PC Interlinked Smoke Alarms

Sale

25% OFF

SKU: S04-R8-4pcs

4PC Interlinked Smoke Alarms

Wireless connected kit
10-year battery lifetime
Simple test/silence button
5 years warranty

£59.99 £79.99

Wisualarm 4-teiliges kabelloses Verbindungsset

Sale

20% OFF

SKU: BD-3S1C-R8

Wisualarm 4-teiliges kabelloses Verbindungsset

Wireless Interconnected Bundle
One sounds, all sound
Long radio signal range
5 years warranty

£79.99 £99.99

BD-3S1H-R8 4PC Interlinked Smoke And Heat Alarms

SKU: BD-3S1H-R8

4PC Interlinked Smoke And Heat Alarms

Wireless Interconnected
Connect to 24 Devices
5 Years Warranty
BS 5839-6:2019 Grade F1

£79.99

S01 Standalone Smoke Alarm Package Box

Sale

37% OFF

SKU: S01

5 Years AA Battery Standalone Smoke Alarm

EN 14604 Standard
AA Battery Powered
Instant Test/Silence
Quick DIY Setup

£9.99 £15.99

S01 AA battery smoke alarm 5-year replaceable battery

Sale

42% OFF

SKU: S01-6pcs

5 Years AA Battery Standalone Smoke Alarm (6PC)

Simple test/silence
Easy installation
Replaceable Battery
EN 14604 Standard

£54.99 £95.99

5x Interlinked Smoke Alarms | 10yr Battery | EN 14604

Sale

SKU: S04-R8(5pcs)

5x Interlinked Smoke Alarms | 10yr Battery | EN 14604

Pre-Linked 5-Pack
Rapid Installation
Standard: EN 14604
BS 5839-6:2019 Grade F1

£67.99 £89.99

BS-4S1C1H-R8 Interlinked Alarm Set New

BD-2S1C1H-R8_interlinked_detectors_set interconnectivity function

Sale

14% OFF

SKU: BD-6S1C1H-R8-NEW

6PC Interlinked Smoke & CO & Heat Alarm Set New

Scotland Law Compliance
Wireless Interlink
10 Years Battery Life
UKCA & CE Marked

£119.99 £139.99

DHI-HY-SA20A_smoke_alarm_fewer_false_alarm

Sale

36% OFF

SKU: BD-5S1C

Wisualarm 6-teiliges Rauch- und CO-Melder-Set

10 Years Battery Lifetime
5 Years Warranty
Easily test and silence
Multiple Detection

£69.00 £107.99

smoke alarm large detection

Sale

31% OFF

SKU: S05-A-10pcs

10 Jahre eigenständiger Rauchmelder (versiegelte Lithiumbatterie)

Clear LED Indicators
Large Silence Button
One-Hand Installation
Certified to EN 14604

£109.99 £159.99

smoke alarm large detection

Sale

SKU: S05-A-5pcs

10 Jahre eigenständiger Rauchmelder (versiegelte Lithiumbatterie)

Clear LED Indicators
Large Silence Button
One-Hand Installation
Certified to EN 14604

£54.99 £64.99

DHI-HY-SA20A_smoke_alarm_fewer_false_alarm

Sale

21% OFF

SKU: DHI-HY-SA30A-5pcs

10 Jahre eigenständiger Rauchmelder

The Landlord’s Choice
10-Year Life Sensor
User-Friendly Design
BS 5839-6:2019 Grade F1

£54.99 £69.99

C06 Standalone Carbon Monoxide Alarm Package Box

Ausverkauft

SKU: C06

10-Jahres-CO-Alarm mit versiegelter Batterie, Temperatur und Luftfeuchtigkeit und LCD-Bildschirm

Carbon Monoxide Detection
Temp & Humidity Sensing
Blue Backlight Function
BS 5839-6:2019 Grade F1

£19.99 £25.99

DHI-HY-GC20C Standalone Carbon Monoxide Alarm Package Box

Sale

SKU: DHI-HY-GC20C

Eigenständiger Kohlenmonoxidmelder mit Digitalanzeige (Figaro Sensor)

Digital Display Screen
Three Indicator Lights
Low Battery Warning
Certified to EN 50291

£21.99 £27.99

C03 Carbon Monoxide Detector

C03 Standalone Carbon Monoxide Alarm Package Box

Sale

30% OFF

SKU: C03

Kohlenmonoxid-Detektor-Alarm

LED Colored Indicators
10 Years Battery Lifetime
Easy Test/Silence
EN 50291 Certified

£15.99 £22.99

DHI-HY-ES10A-R8 Environmental Sensor Main Image

DHI-HY-ES10A-R8_environmrntal_sensor_package

Sale

20% OFF

SKU: DHI-HY-ES10A-R8

10 Jahre Temperatur- und Luftfeuchtigkeitssensor mit nicht austauschbarer Batterie

Temp. & Humidity Sensing
Stable Wireless Connection
10-year lithium battery
Alert Notification

£15.99 £20.00

DHI-HY-GW01A wireless gateway locate the alarm source with app

Sale

SKU: KIT2-1G10S-R8_GB

Gateway and 10PC Smoke Alarms

Smart Home Security
Ultra Loud Sound
Magnetic Pads Included
Locate Alarm with APP

£169.99 £179.99

gateway and interlinked environmental sensor

DHI-HY-ES10A-R8 Environmental Sensor details

Ausverkauft

14% OFF

SKU: KIT1-1G3E-R8-EU

10 Jahre Temperatur- und Luftfeuchtigkeitssensor mit nicht austauschbarer Batterie

Free App Service
Temperature & Humidity Detection
Indoor Thermometer Hygrometer
Stable Wireless Connection

£59.99 £69.99

BD-1G3S1C1H-R8 gateway with 3 smoke alarms, heat alarm, CO alarm

Ausverkauft

SKU: BD-1G5S1C1H-R8

Gateway and Smoke & CO & Heat Alarm

Ultimate All-in-One Safety
Instant Mobile App Alerts
Whole-Home Interlinked Defense
10-Year Long-Life Battery

£149.00 £179.00

H01 heat alarm sound output of 85dB(A)

Sale

SKU: BD-1G5S1H-R8

Gateway and Smoke & Heat Alarm

Wireless Interconnected
Human Voice Alerts
Multiple Detection Devices
Smart Home Fire Safety

£114.99 £159.99

gateway and interlinked smoke alarm

DHI-HY-GW01A wireless gateway locate the alarm source with app

Sale

23% OFF

SKU: KIT2-1G5S-R8_GB

Gateway and Smoke Alarms

Link up to 24 devices
Ultra Loud Sound: 85dB
Human Voice Notification
Wireless Interconnection

£99.99 £129.99

DHI-HY-ES10A-R8 Environmental Sensor connection

Ausverkauft

15% OFF

SKU: BD-1G10S3E-R8

Home Guardian & Wellness Elite Kit

Instant App Alerts
Total Coverage
Smart Monitoring
10 Years Battery

£219.99 £259.99

7 Jahre kabelloser, vernetzter CO-Alarm (austauschbare Batterie)

Sale

16% OFF

SKU: C02-R8

7 Jahre kabelloser, vernetzter CO-Alarm (austauschbare Batterie)

Wireless Interlinked Safety
Easy Replaceable Battery
EN 50291 Certified
Digital Display

£29.99 £36.00

7 Jahre kabelloser, vernetzter CO-Alarm (austauschbare Batterie)

Sale

23% OFF

SKU: C02-R8(2pcs)

7 Jahre kabelloser, vernetzter CO-Alarm (austauschbare Batterie)

EN 50291 Certified
Digital Display
Long radio signal range
Wireless interconnected

£54.99 £72.00

7 Jahre kabelloser, vernetzter CO-Alarm (austauschbare Batterie)

Sale

30% OFF

SKU: C02-R8(4pcs)

7 Jahre kabelloser, vernetzter CO-Alarm (austauschbare Batterie)

EN 50291 Certified
Digital Display
Long radio signal range
Wireless interconnected

£99.99 £144.00

H01-R8 Interlinked_heat_alarm main pic 1

Sale

12% OFF

SKU: H01-R8(2pcs)

Drahtloser, miteinander verbundener Hitzemelder

Wireless interconnected
Low battery warning signal
Link up to 24 devices
BS 5839-6:2019 Grade F1

£41.99 £48.00

H01 heat alarm main pic 3

Sale

20% OFF

SKU: H01-R8(4pcs)

Drahtloser, miteinander verbundener Hitzemelder

Wireless interconnected
Low battery warning signal
Link up to 24 devices
BS 5839-6:2019 Grade F1

£75.99 £96.00

H01-R8 Interlinked Heat Alarm Package Box

Sale

SKU: H01-R8

Drahtloser, miteinander verbundener Hitzemelder

Wireless Interlinked Protection
Heat-Sensitive Precision
10-Year Battery Life
Kitchen Optimized

£22.99 £24.00

S04-R8 Interlinked Smoke Alarm Package Box

SKU: S04-R8

10 Jahre kabelloser, vernetzter Rauchmelder (versiegelte Batterie)

10-Year Battery Life
Wireless Interconnect
Link Up to 24 Devices
BS 5839-6:2019 Grade F1

£24.00

3pcs interlinked smoke alarms

Interlinked Smoke Alarm New (3PC)

Sale

16% OFF

SKU: S05-R8-B (3pcs)

Interlinked Smoke Alarm New (3PC)

Wireless connected kit
10-year battery lifetime
Compliance Standard: EN 14604
Large test and silence button

£49.99 £59.99

Interlinked Smoke Alarm New (4PC)

Sale

25% OFF

SKU: S05-R8-B(4pcs)

Interlinked Smoke Alarm New (4PC)

Wireless connected kit
10-year battery lifetime
Compliance Standard: EN 14604
CE, UKCA marked

£59.99 £79.99

5pcs interlinked smoke alarms

S05-R8 Interlinked smoke alarms

Sale

20% OFF

SKU: S05-R8-B(5pcs)

Interlinked Smoke Alarm New (5PC)

10-Year Lithium Battery
Wireless Interconnection
Certified Safety
5-Year Warranty

£79.99 £99.99

S05-R8-B Interlinked smoke alarm new

S05-R8-A Interlinked Heat Alarm Package Box

Sale

SKU: S05-R8-A

Interlinked Smoke Alarm New S05-R8-A

Decade of Protection
No Wiring Needed
Interlinked Security
EN 14604 certified

£22.99 £24.00

S05-R8-B Interlinked smoke alarm new

S05-R8-A Interlinked Heat Alarm Package Box

Sale

SKU: S05-R8-B

Interlinked Smoke Alarm New S05-R8-B

Interlinked Safety Network
Smart Gateway Integration
10-Year Battery Life
EN 14604 Certified

£22.99 £24.00

Kitchen-First Smart Safety Kit

Ausverkauft

20% OFF

SKU: BD-1G5S1G1H-R8

Kitchen-First Smart Safety Kit

3-in-1 Defense
Instant App Alerts
Whole-Home Link
Kitchen Optimized

£159.99 £199.99

Premium Kit | Entire Home Coverage Bundle

Ausverkauft

10% OFF

SKU: BD-1G5S2H1C1G2W2E-R8

Premium Kit | Entire Home Coverage Bundle

All-in-One Full Ecosystem
Smart App Control & Alerts
Maximum Scalability
5 Years Warranty

£269.99 £299.99

Wisualarm heat alarm

H01 Standalone Heat Alarm Package Box

Sale

25% OFF

SKU: H01

10 Jahre versiegelte Batterie Standalone-Hitzealarm

Class A1 Fire Detection
10-year Battery Lifetime
Easy Test and Silence
BS 5839-6:2019 Grade F1

£17.99 £23.99

Alarm Guides Before You Buy

Alarm Guides Before You Buy

Smoke Alarms

Wisualarm offers smoke alarms, which adopt the advanced split-spectrum technology to reduce the false alarm for peace of mind. Check our various smoke alarms.

How do Smoke Alarms Function?
Smoke alarms typically consist of two main types: ionization and photoelectric. Ionization smoke alarms contain a small amount of radioactive material that ionizes the air, while photoelectric smoke alarms use a light beam to detect smoke particles. When smoke enters the alarm, it triggers a sensor that sets off the alarm, alerting occupants to the potential danger.

Interlinked Smoke Alarms

Interlinked smoke alarms are a network of smoke detectors that are connected wirelessly or through a hardwired system. When one alarm detects smoke or fire, it triggers all the interconnected alarms in the network to sound simultaneously. This interconnected system ensures that everyone in the house is alerted to the danger, no matter where they are located.

Smoke Alarms Purchasing Tips

1. Ensure products comply with local British fire protection standards. Grade F: Battery operated, stand-alone smoke detectors and heat alarms. Primarily intended for domestic, owner-occupied housing. F Grade alarms with interlink (especially with 10-year sealed lithium batteries) may be used as Grade D in some cases. Always verify with the relevant authority.
2. Check the power source. CR123A Batteries: referred to simply as 123 batteries, are high power lithium based batteries used extensively in security alarm systems. An AA battery is a standard size of dry cell battery commonly used in portable electronic devices.

Multi-Sensor Smoke Alarms

Combining various smoke detection sensor technologies enhances the capabilities of each technology. Wisualarm also offer heat alarm, commonly used in kitchen and carbon monoxide alarm to safeguard against fire and carbon monoxide risks. Beside, for gas leaking and carbon dioxide detection, Wisualarm also prepared the solutions for that.

Find Helpful Articles

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Carbon Monoxide Safety: Protecting Your Home Against the "Silent Killer"

Carbon Monoxide Safety: Protecting Your Home Against the "Silent Killer"

Introduction: A Preventable Tragedy in British Homes Every year, the UK Fire and Rescue Services and the NHS deal with thousands of cases of Carbon Monoxide (CO) poisoning. Often referred...

Beyond the Alarm: Building a Complete Safety Network for Your Home

Beyond the Alarm: Building a Complete Safety Network for Your Home

For decades, the standard for home safety in the UK was simple: fit a battery-powered smoke alarm in the hallway and change the battery once a year. However, as our...

The 2026 Guide to the Best Interlinked Smoke & Heat Alarms in Scotland

The 2026 Guide to the Best Interlinked Smoke & Heat Alarms in Scotland

Since February 2022, Scottish law has mandated that every home—regardless of age or tenure—must have an interlinked alarm system. This means if a fire starts in the kitchen, the alarm...

UK & Scotland Fire Safety Guide: Why Interlinked Alarms and CO Detectors are Mandatory

UK & Scotland Fire Safety Guide: Why Interlinked Alarms and CO Detectors are Mandatory

In Scotland, fire safety isn't just a recommendation—it’s a legal requirement that sets some of the highest standards in the world. Since February 2022, the laws governing smoke and heat...

UK Carbon Monoxide Safety Guide for 2026 & an In-depth Look at Wisualarm

UK Carbon Monoxide Safety Guide for 2026 & an In-depth Look at Wisualarm

In the UK, as heating seasons cycle through, a lurking threat remains ever-present: carbon monoxide (CO). This colourless, odourless, and non-irritating gas, often dubbed the "silent killer," claims dozens of...

Why Does My Carbon Monoxide Alarm Keep Beeping?

Why Does My Carbon Monoxide Alarm Keep Beeping?

In the UK, we are a nation of "stay calm and carry on," but there is one sound that should never be ignored: the persistent chirping or blaring of a...

Safeguarding Your Home: A Comprehensive Guide to Interlinked Smoke Alarms

Safeguarding Your Home: A Comprehensive Guide to Interlinked Smoke Alarms

When it comes to fire safety, the "lone wolf" approach is a relic of the past. In the UK, fire safety regulations—particularly in Scotland and increasingly across England and Wales—are...

Why Every UK Home Needs a Floor Water Sensor?

Why Every UK Home Needs a Floor Water Sensor?

In the UK, we often talk about the weather outside, but it’s the water inside our homes that frequently causes the most heartbreak. According to the Association of British Insurers...

Guide to Fire Blankets: Protecting Your UK Home and Staying Compliant

Guide to Fire Blankets: Protecting Your UK Home and Staying Compliant

In the UK, the kitchen is statistically the most dangerous room in the house. According to the Home Office's Fire Statistics, cooking appliances are responsible for nearly 45% of all...

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