4PC Interlinked Smoke and Carbon Monoxide Detectors
Wireless Interconnected Bundle
One sounds, all sound
Long radio signal range
5 years warranty
£79.99
Regular price
£99.99
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12%OFF
SKU: BD-3S1H-R8-NEW
4PC Interlinked Smoke And Heat Alarms NEW
Wireless Interconnected
Connect to 24 Devices
5 Years Warranty
BS 5839-6:2019 Grade F1
£69.99
Regular price
£79.99
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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
Regular price
£89.99
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14%OFF
SKU: BD-4S1C1H-R8-NEW
6PC Interlinked Smoke & CO & Heat Alarm Set New
Scotland Law Compliance
Wireless Interlink
10 Years Battery Life
UKCA & CE Marked
£119.99
Regular price
£139.99
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20%OFF
SKU: DHI-HY-ES10A-R8
Environmental Sensor
Temp. & Humidity Sensing
Stable Wireless Connection
10-year lithium battery
Alert Notification
£15.99
Regular price
£20.00
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14%OFF
SKU: KIT1-1G3E-R8
Gateway and Environmental Sensor
Free App Service
Temperature & Humidity Detection
Indoor Thermometer Hygrometer
Stable Wireless Connection
£59.99
Regular price
£69.99
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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
Regular price
£179.00
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SKU: BD-1G5S1H-R8
Gateway and Smoke & Heat Alarm
Wireless Interconnected
Human Voice Alerts
Multiple Detection Devices
Smart Home Fire Safety
£114.99
Regular price
£159.99
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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
Regular price
£129.99
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16%OFF
SKU: C02-R8
Interlinked Carbon Monoxide Alarm
Wireless Interlinked Safety
Easy Replaceable Battery
EN 50291 Certified
Digital Display
£29.99
Regular price
£36.00
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20%OFF
SKU: C02-R8(2pcs)
Interlinked Carbon Monoxide Alarm (2PCS)
EN 50291 Certified
Digital Display
Long radio signal range
Wireless interconnected
£56.99
Regular price
£72.00
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23%OFF
SKU: C02-R8(4pcs)
Interlinked Carbon Monoxide Alarm (4PCS)
EN 50291 Certified
Digital Display
Long radio signal range
Wireless interconnected
£109.99
Regular price
£144.00
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12%OFF
SKU: H01-R8(2pcs)
Interlinked Heat Alarm (2PCS)
Wireless interconnected
Low battery warning signal
Link up to 24 devices
BS 5839-6:2019 Grade F1
£41.99
Regular price
£48.00
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20%OFF
SKU: H01-R8(4pcs)
Interlinked Heat Alarm (4PCS)
Wireless interconnected
Low battery warning signal
Link up to 24 devices
BS 5839-6:2019 Grade F1
£75.99
Regular price
£96.00
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SKU: H01-R8
Interlinked Heat Alarm With 10 Years Battery
Wireless Interlinked Protection
Heat-Sensitive Precision
10-Year Battery Life
Kitchen Optimized
£22.99
Regular price
£24.00
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16%OFF
SKU: DHI-HY-GA20A-R8-GB
Interlinked Methane Gas Alarm
Audible and Visual Alarm
Connect to Gateway
Immediate Response
Link up to 24 devices
£29.99
Regular price
£36.00
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SKU: S04-R8
Interlinked Smoke Alarm
10-Year Battery Life
Wireless Interconnect
Link Up to 24 Devices
BS 5839-6:2019 Grade F1
£24.00
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12%OFF
SKU: S04-R8-2pcs
Interlinked Smoke Alarm (2PCS)
10-Year Battery Life
Wireless Interconnect
Link Up to 24 Devices
BS 5839-6:2019 Grade F1
£41.99
Regular price
£48.00
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SKU: S05-R8-A
Interlinked Smoke Alarm New S05-R8-A
Decade of Protection
No Wiring Needed
Interlinked Security
EN 14604 certified
£22.99
Regular price
£24.00
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12%OFF
SKU: S05-R8-A(2pcs)
Interlinked Smoke Alarm New S05-R8-A (2PCS)
Decade of Protection
No Wiring Needed
Interlinked Security
EN 14604 certified
£41.99
Regular price
£48.00
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16%OFF
SKU: S05-R8-A (3pcs)
Interlinked Smoke Alarm New S05-R8-A (3PC)
Wireless Connected Kit
10-year Battery Lifetime
Compliance Standard: EN 14604
Large Test & Silence Button
£49.99
Regular price
£59.99
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25%OFF
SKU: S05-R8-A(4pcs)
Interlinked Smoke Alarm New S05-R8-A (4PC)
Wireless connected kit
10-year battery lifetime
Compliance Standard: EN 14604
CE, UKCA marked
£59.99
Regular price
£79.99
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20%OFF
SKU: S05-R8-A(5pcs)
Interlinked Smoke Alarm New S05-R8-A (5PC)
10-Year Lithium Battery
Wireless Interconnection
EN 14604 Certified
5-Year Warranty
£79.99
Regular price
£99.99
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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
Regular price
£24.00
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29%OFF
SKU: BD-1G1W2E-R8
Smart Gateway, Water Leak Detector & Environmental Sensor Kit
Free App Service
Temperature & Humidity Detection
Indoor Thermometer Hygrometer
Stable Wireless Connection
£69.99
Regular price
£98.99
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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.
Many UK homes installed 10-year smoke alarms around 2015–2016. If your alarm has been protecting your home for almost a decade, now is the time to check its age and...
What Is a Smart Smoke Alarm? A smart smoke alarm is a connected smoke detector that sends alerts to your smartphone when smoke is detected. Unlike traditional smoke alarms that...
When setting up home safety protection, many UK homeowners assume smoke and carbon monoxide (CO) alarms work in a similar way. However, guidance from UK fire services such as the...
2026 Home Safety: More Than Just Smoke Modern UK homes are smarter and more complex, featuring open-plan layouts, more electrical devices, and gas-powered heating. A single smoke alarm is no...
In recent discussions across Reddit, Quora, and home improvement forums, smoke alarms and carbon monoxide safety come up again and again—not from a technical point of view, but from real...
As of June 2026, the regulatory landscape for residential fire and carbon monoxide (CO) safety in the UK has reached a new level of sophistication. For property owners and landlords,...
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Yes, smoke alarms are fully recyclable in the UK, but they require specialist processing. Under United Kingdom environmental law, these devices are classified as Waste Electrical and Electronic Equipment (WEEE),...
Carbon monoxide (CO) is a colorless, odorless gas that can be extremely dangerous if not detected early. That's why having a carbon monoxide alarm in your home is crucial for...