Optical Smoke Alarms
Advanced detection technology responds swiftly to the fires that pose the greatest risk to your family. Optical smoke alarms detect smouldering fires faster than traditional systems, providing crucial early warning when seconds matter most.
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Photoelectric Technology Explained
The sensors in Optical Smoke Alarms use light beam interruption to detect smoke particles. When smoke enters the detection chamber, it scatters infrared light onto a photocell, triggering the alarm. This method excels at identifying larger smoke particles from slow-burning fires.
Smouldering fires produce dense smoke long before flames appear. Furniture, carpets, and bedding create these dangerous conditions that can fill rooms with toxic gases while occupants sleep.
Less prone to false alarms compared to other detection methods, optical alarms are less likely to activate from cooking fumes or shower steam.
Modern optical sensors incorporate advanced algorithms that distinguish between genuine fire conditions and harmless environmental factors. This intelligent processing reduces nuisance activations and maintains high sensitivity to real threats.
Optimal Application Areas
Living rooms benefit from Optical Smoke Alarms due to soft furnishings that create smouldering fire risks. Sofas, curtains, and carpets can burn for extended periods before producing visible flames, generating dangerous smoke concentrations.
Bedrooms require optical alarms positioned away from windows and air vents to prevent false alarms from drafts. Central ceiling placement provides optimal smoke detection coverage throughout the sleeping area.
Hallways and escape routes need immediate fire notification to ensure safe evacuation. Optical alarms positioned in these critical pathways provide early warning that allows occupants to exit before smoke obscures visibility.
Office spaces containing paper, electronics, and furnishings benefit from optical detection. These materials typically produce smouldering fires that generate substantial smoke before temperature rises significantly.
Product Selection
The Kidde 29HD offers proven reliability with optical sensor technology. This unit combines affordability with essential features including low battery warnings and test button functionality.
Sealed battery options eliminate maintenance concerns for property managers. The UltraFire ULLS10 provides 10-year operation without battery replacement, ideal for rental properties or hard-to-reach locations.
Interconnected optical alarms create comprehensive protection networks. When combined with heat detection systems, these sensors provide complete fire safety coverage tailored to each room's specific risks.
Professional-grade units meet commercial installation requirements and offer residential applications enhanced features. These systems often include remote testing capabilities and diagnostic functions.
Our optical alarm range encompasses solutions for every property type and budget. Expert guidance helps you select appropriate models for your specific application requirements.
For installation guidance and positioning advice, consult our professional installation guides. Proper placement maximises detection effectiveness and minimises false alarm potential.
Invest in proven detection technology that prioritises your family's safety. Explore our photoelectric smoke alarm selection and discover the protection advantages of modern optical sensing systems.
Mains Powered Smoke Alarm with Lithium Back-Up Battery - Hispec RF10-PRO
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- Power: 230V mains powered with battery backup
- Backup: Rechargeable lithium battery backup
- Warranty: 5 year manufacturer's warranty
- Radio-interlinks up to 20 compatible devices
- Suitable for BS 5839-6: 2019 Grade D1
- Kitemarked to BE EN 14604: 2005
- Also suitable for both the Welsh and Scottish 2022 legislation
£76.99 inc VAT
£64.16 ex VAT
Mains Radio-Interlinked Optical Smoke Alarm with Self-Charging 10 Year Back-up Battery - Aico Ei3016RF
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- Power: 230V mains powered with back-up battery
- Backup Battery: Self-charging battery
- Warranty: 5 year warranty
- Supplied with Ei3000MRF SmartLINK module
- Radio-interlink with up to 12 devices
- Extract real time data to their smart phone
- CE and Kitemarked to BS EN 14604: 2005
- Also suitable for both the Welsh and Scottish 2022 legislation
£112.27 inc VAT
£93.56 ex VAT
Mains Radio-Interlinked Combined Smoke and Heat Alarm with Self-Charging 10 Year Back-up Battery - Aico Ei3024RF
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- Power: 230V mains powered with back-up battery
- Backup Battery: Self-charging battery
- Warranty: 5 year warranty
- Combined alarm: both an optical smoke, and heat sensor
- Hybrid interlinking with up to 12 compatible devices
- AudioLINK - extract real time data to your smart phone
- Kitemarked to BS EN 14604: 2005 (smoke)
- Kitemarked to BS 5446-2: 2003 (heat)
- Also suitable for both the Welsh and Scottish 2022 legislation
£126.00 inc VAT
£105.00 ex VAT
Mains Powered Smoke & Heat Alarm with Rechargeable Lithium Battery Backup - Hispec RF10-PRO
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- Power: 230V mains powered with lithium back-up battery
- Back-up Battery: Rechargeable lithium battery
- Warranty: 5 year manufacturer's warranty
- Multi-sensor alarm containing both a smoke and heat sensor
- Radio-interlink up to 20 compatible alarms
- Kitemarked to BS EN 14604: 2005 (smoke)
- Kitemarked to BS 5446-2: 2003 (heat)
- Also suitable for both the Welsh and Scottish 2022 legislation
£136.55 inc VAT
£113.79 ex VAT
10 Year Longlife Battery Optical Smoke Alarm Twin Pack - Kidde 10Y29
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- FREE delivery
- Battery: Built-in, lasts the lifetime of your alarm - GUARANTEED
- Warranty: 10 year warranty
- Features test and hush buttons
- Low Volume Test feature
- 2 x KE10Y29 smoke alarms
- Suitable for BS 5839-6: 2019 (Grade F1 installations)
- Kitemarked to BS EN 14604: 2005
£28.80 inc VAT
£24.00 ex VAT
BLACK+DECKER Mains Smoke Alarm With 9V Battery Backup
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- Power: 230V mains powered with back-up battery
- Back-up Battery: 9V alkaline battery (included)
- Warranty: 5 Year manufacturer's warranty
- Hardwire interlink with up to 20 devices
- Suitable for BS 5839-6: 2019 Grade D2 installations
- Also suitable for Scottish & Welsh Regulations
£19.99 inc VAT
£16.66 ex VAT
10 Year Longlife Battery Radio-Interlinked Smoke Alarms and Heat Alarms - FireAngel Pro Connected Series
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- Battery operated – 10 year sealed lithium battery
- Available in Optical and Heat versions (FP2620W2-R and FP1720W2-R)
- Interlinks via radio frequency with up to 50 units
- Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade F1 installations
- Compatible with the FireAngel Pro Connected Gateway
- Please note: alarms are sold individually
- Compliant with Scottish 2022 and Northern Ireland Landlord 2024 legislation
From: £66.14 inc VAT
£55.12 ex VAT
Mains Powered Smoke Alarms & Heat Alarms with Self-Charging 10 Year Back-up Battery - Kidde Firex KF-R Series
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- 230V mains powered with self-charging lithium back-up battery
- Available in Optical and Heat versions
- Interlinks with up to 24 units
- Suitable for BS 5839-6: 2013 Grade D1installations
- Kitemarked and CE marked
- Also suitable for both the Welsh and Scottish 2022 legislation
From: £48.68 inc VAT
£40.57 ex VAT
Mains Radio-Interlink Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - Aico Ei140eRF Series
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- 230V mains powered with alkaline back-up battery
- Available in Optical and Heat versions (Ei146eRF, Ei144eRF)
- Interlinks via radio frequency with up to 12 units
- Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade D2
- All alarms also act as repeaters
- Please note: alarms are sold individually
- Also suitable for both the Welsh and Scottish 2022 legislation
From: £105.91 inc VAT
£88.26 ex VAT
BLACK+DECKER Combination Smoke & Heat Alarm - 10 Year Sealed Battery
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- Product Life: 10 years
- Battery: Sealed lithium battery
- Warranty: 5 year manufacturer's warranty
- Combined optical smoke and heat detector
- Ideal for hallways, bedrooms, and living areas
- Suitable for ceiling installation
£17.99 inc VAT
£14.99 ex VAT
Radio-Interlinked 3 Smoke Alarms and Heat Alarm Kit - UltraFire
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- Powered with AA alkaline batteries
- Warranty: 10 years
- Large test & hush button
- Wirelessly interlink up to 50 compatible devices
- Includes 3 x optical smoke alarms and 1 x heat alarm
- Suitable for BS 5839-6: 2019 Grade F2 installations
£87.55 inc VAT
£72.96 ex VAT
Twin Pack - FireAngel FA6620-R 10 Year Longlife Battery Optical Smoke Alarm
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- Battery: 10 year sealed lithium battery
- Warranty: 5 year warranty
- Suitable for leisure accommodation vehicles
- Compliant to BS 5839-6: 2019 (Grade F1 installations)
- Certified to BS EN 14604: 2005
£27.79 inc VAT
£23.16 ex VAT
Mains Optical Smoke Alarm with Alkaline Battery Backup - Firehawk FHN250BB
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The Firehawk FHN250BB is a mains powered optical smoke alarm with an alkaline battery backup. It can be hardwired interlink up to 15 devices in one system including the Firehawk FHN250 or FHN450 alarms.
- 230V mains power with alkaline battery backup
- 6 years manufacturer's warranty
- Hardwire interlink up to 15 Firehawk smoke and heat alarms.
- Also suitable for both the Welsh and Scottish 2022 legislation
£19.58 inc VAT
£16.32 ex VAT
Radio-Interlinked 10 Year Sealed Battery Optical Smoke Alarm - UltraFire ULLS10RF
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Supporting wireless interlink with up to 15 total alarms to cover the whole house, the UltraFire ULLS10RF optical smoke alarm features a sealed 10 year battery and 10 year manufacturer's warranty.
- Battery: 10 year sealed lithium battery
- Warranty: 10 year manufacturer's warranty
- Optical smoke sensor suitable for hallways, landings, living rooms, and bedrooms
- Wireless interlink up to 15 total alarms
From: £42.59 inc VAT
£35.49 ex VAT
10 Year Longlife Battery Optical Smoke Alarm - UltraFire ULLS10
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Powered by a 10 year sealed lithium battery and featuring an optical smoke sensor specially designed to maximise smoke detection and minimise false alarms, this alarm provides top-class standalone protection.
- Battery: 10 year sealed lithium battery
- Warranty: 10 year manufacturer's warranty
- Optical smoke sensor suitable for hallways, landings, living rooms, and bedrooms
This product is currently unavailable
10 Year Sealed Battery 2 Smoke Alarms & 1 Heat Alarm Kit - UltraFire ULL10
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- FREE delivery
- Battery: 10 year sealed lithium battery
- Warranty: 10 year manufacturer's warranty
- Large combined test and silence button
- 2 x optical smoke alarms and 1 x heat alarm included
- Suitable for BS 5839-6: 2019 Grade F1 installations
This product is currently unavailable
10 Year Sealed Battery 3 Smoke Alarms & 1 Heat Alarm Kit - UltraFire ULL10
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- FREE delivery
- Battery: 10 year sealed lithium battery
- Warranty: 10 year manufacturer's warranty
- Large combined test and silence button
- 3 x optical smoke alarms and 1 x heat alarm included
- Suitable for BS 5839-6: 2019 Grade F1 installations
This product is currently unavailable
Battery Smoke Alarms and Heat Alarm Home Essentials Kit - UltraFire UFUB1KIT
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- FREE delivery
- Battery: Alkaline batteries (included)
- Warranty: 10 year warranty
- Large test and hush button
- 2 x optical smoke alarms and 1 x heat alarm included
- Suitable for BS 5839-6: 2019 Grade F2 installations
- CE marked
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