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Alarms Suitable for Scottish Regulations

From February 2021 all homes in Scotland must be fitted with interlinking smoke and heat alarms, and also carbon monoxide alarms if there is a carbon-fuelled appliance or flue. Not all alarms on the market are suitable and choosing the correct alarms is vital to complying with the law. Every alarm in this section has been selected from our full range of smoke, heat and carbon monoxide alarms to comply with the new legislation.

Power: All alarms must be powered either from a mains circuit, or by a sealed and tamper-proof battery which lasts the full lifespan of the alarm. Any alarm powered only by an alkaline battery is not allowed.

Interlink: Smoke and heat alarms must support interlinking, either via hardwire cable or wireless radio-frequency. Carbon monoxide alarms do not have to interlink with the smoke and heat alarms, but we have included a selection which can do so, to provide the fastest possible warning to all occupants.

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Page 1 (Products 1 to 20 of 39)

Radio-Interlinked 10 Year 2 Smoke Alarms & 1 Heat Alarm Kit - Firehawk W Series

This radio-interlinked alarm kit contains 2x FHB10W optical smoke alarms and 1x FHH10W heat alarm. All alarms are powered by 10 year lithium batteries.

  • Battery: 10 year sealed lithium battery
  • Warranty: 7 year manufacturer's warranty
  • Easy expansion – Interlink up to 15 alarms
  • Also suitable for the 2021 Scottish legislation

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£84.99 ex VAT

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Wireless 10 Year 3 Smoke and 1 Heat Alarm Kit - Firehawk W Series

This kit features 3 smoke and 1 heat alarms from the Firehawk W Series. All devices have 10 hour low battery silence for a peaceful night. Wirelessly interlinked.

  • Battery: 10 year sealed lithium battery
  • Warranty: 7 year manufacturer's warranty
  • Easy expansion – Interlink up to 15 alarms
  • Also suitable for the 2021 Scottish legislation

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10 Year Longlife Battery Radio-Interlinked Smoke Alarms and Heat Alarms - FireAngel Pro Connected Series

  • 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
  • Also suitable for the 2021 Scottish legislation

£47.99 inc VAT

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10 Year Sealed Lithium Battery Radio-Interlinked Optical Smoke Alarms & Heat Alarms - Aico Ei600 Series

  • Battery operated - 10 year sealed lithium battery
  • Wireless radio-interlinked - can interlink with both mains and battery operated alarms
  • 10 year sealed lithium battery
  • Frequently accepted as alternative to mains powered alarms
  • Suitable for BS 5839-6: 2013 Grade F1 installations
  • Please note: alarms are sold individually
  • Also suitable for the 2021 Scottish legislation

£123.83 inc VAT

£103.19 ex VAT

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Mains Radio-Interlink Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - Kidde Slick SFWRF

  • 230V mains powered with alkaline back-up battery
  • Available in Ionisation, Optical and Heat versions (1SFWRF, 2SFWRF, 3SFWRF)
  • Interlinks via radio frequency with up to 15 units, no cables required between units
  • Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade D2 installations
  • All alarms also act as repeaters
  • Please note: alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
25 Customer Reviews

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Mains Radio-Interlink Smoke Alarms & Heat Alarms with Sealed Longlife Back-up Battery - FireAngel Pro Connected Series

  • Power: 230V mains powered with sealed longlife back-up battery
  • Available in Optical and Heat versions (FP1640W2-R and FP1740W2-R)
  • Interlinks via radio frequency with up to 50 units
  • Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade D1 installations
  • Compatible with the FireAngel Pro Connected Gateway
  • Please note: alarms are sold individually
  • Also suitable for the 2021 Scottish legislation

£65.99 inc VAT

£54.99 ex VAT

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Mains Radio-Interlink Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - Aico Ei140RF Series

  • 230V mains powered with alkaline back-up battery
  • Available in Ionisation, Optical and Heat versions (Ei141RF, Ei146RF, Ei144RF)
  • 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 the 2021 Scottish legislation
21 Customer Reviews

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Mains Radio-Interlink Smoke Alarms & Heat Alarms with Sealed Longlife Back-up Battery - FireAngel Pro 230 Series

  • 230V mains powered with sealed longlife back-up battery
  • Wireless radio-interlinked - can interlink up to 50 alarms
  • Safelincs EXCLUSIVE 5 year warranty
  • Suitable for BS 5839-6: 2019 Grade D1 installations
  • Please note: alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
4 Customer Reviews

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Mains Radio-Interlink Smoke Alarms & Heat Alarms with Self-Charging 10 Year Back-up Battery - Kidde Slick SFLLWRF

  • 230V mains powered with lifetime self-charging lithium back-up battery
  • Available in Ionisation, Optical and Heat versions (1SFLLWRF, 2SFLLWRF, 3SFLLWRF)
  • Interlinks via radio frequency with up to 15 units, no cables required between units
  • Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade D1 installations
  • All alarms also act as repeaters
  • Please note: alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
4 Customer Reviews

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Mains Radio-Interlink Smoke Alarms & Heat Alarms with Self-Charging 10 Year Back-up Battery - Aico Ei3000RF Series

  • Available in Optical, Heat and Combined Optical and Heat
  • Mains powered alarms with tamper-proof lithium back-up batteries
  • Suitable for BS 5839-6: 2019 Grade D1 installations
  • Supplied with an Ei3000MRF SmartLINK Module for radio-interlinking
  • Hybrid (wired or wireless) interlinking with up to 12 compatible devices
  • Please note: alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
2 Customer Reviews

£93.58 inc VAT

£77.98 ex VAT

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Mains Radio-Interlinked Combined Heat and Carbon Monoxide Alarm with Self-Charging 10 Year Back-up - Aico Ei3028RF

  • Product Lifespan: 10 years
  • Power: 230V mains powered with battery backup
  • Backup Battery: Re-chargeable lithium battery
  • Warranty: 5 year warranty
  • Contains both a heat and electrochemical CO sensor
  • Can interlink with up to 12 devices via SmartLINK
  • Kitemarked to BS 5446-2:2003 (heat)
  • Kitemarked to BS 50291-1:2010 (CO gas)
  • Suitable for ceiling installation
  • Also suitable for the 2021 Scottish legislation

£119.98 inc VAT

£99.98 ex VAT

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Mains Radio-Interlinked Combined Optical Smoke & Heat Alarm with Self-Charging 10 Year Back-up - Aico Ei2110eRF

  • Power: 230V mains powered with back-up battery
  • Backup Battery: Self-charging lithium battery
  • Warranty: 5 year warranty
  • Wirelessly interlinks with up to 12 compatible alarms
  • Optical and heat in one alarm for optimum protection
  • Suitable for BS 5839-6: 2019 Grade D1
  • Kitemarked to BS EN 14604: 2005
  • Also suitable for the 2021 Scottish legislation

£122.03 inc VAT

£101.69 ex VAT

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Mains Powered Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - FireAngel W1-R Series

  • Power: 230V mains powered with battery back-up
  • Backup Battery: 9V alkaline battery (included)
  • Warranty: 5 year warranty
  • Available in Optical and Heat versions
  • Interlinks with up to 12 units
  • Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade D2
  • Please note: alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
5 Customer Reviews

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Mains Powered Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - BRK 600 Series

  • 230V mains powered with alkaline back-up battery
  • Available in Ionisation, Optical and Heat versions (670MBX, 660MBX, 690MBX)
  • Interlinks with up to 12 units
  • Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade D2
  • Please note: alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
31 Customer Reviews

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Mains Powered Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - Kidde Firex KF Series

  • 230V mains powered with alkaline back-up battery
  • Available in Ionisation, Optical and Heat versions
  • Interlink with up to 24 units
  • Suitable for BS 5839-6: 2019 Grade D2 installations
  • Kitemarked and CE marked
  • Please note: alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
25 Customer Reviews

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Mains Powered Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - Kidde Slick SFW Series

  • 230V mains powered with alkaline back-up battery
  • Available in Ionisation, Optical and Heat versions (KF1SFW, KF2SFW, KF3SFW)
  • Interlinks with up to 24 units
  • Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade D2 installations
  • Please note: alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
29 Customer Reviews

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£16.99 ex VAT

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Mains Powered Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - Aico Ei140 Series

  • 230V mains powered with alkaline back-up battery
  • Available in Ionisation, Optical and Heat versions (Ei141, Ei146, Ei144)
  • Made in Ireland by Ei Electronics
  • Interlinks with up to 12 units
  • Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade D2 installations
  • Please note: Alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
40 Customer Reviews

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£18.99 ex VAT

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Mains Powered Smoke Alarms & Heat Alarms with Self-Charging 10 Year Back-up Battery - BRK 700 Series

  • 230V mains powered with lifetime self-charging back-up battery
  • Available in Ionisation, Optical and Heat versions (770MRL, 760MRL, 790MRL)
  • Interlinks with up to 12 units
  • Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade D1
  • Please note: Alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
4 Customer Reviews

From: £31.19 inc VAT

£25.99 ex VAT

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Mains Powered Smoke Alarms & Heat Alarms with Sealed Longlife Back-up Battery - FireAngel Pro 230 Series

  • 230V mains powered with lifetime lithium battery – never needs replacing!
  • Available in Optical and Heat versions (ST-230, HT-230)
  • Interlinks with up to 30 units
  • Kitemarked, CE marked and suitable for BS 5839-6: 2019 Grade D1 installations
  • Please note: Alarms are sold individually
  • Also suitable for the 2021 Scottish legislation
12 Customer Reviews

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2021 Scottish Legislation

2021 Scottish Legislation

Announced in February 2019 and in effect from February 2021, the Scottish Government updated legislation covering fire alarms in domestic properties. The new requirements, "Tolerable Standard Guidance: Satisfactory Fire Detection and Satisfactory Carbon Monoxide Detection", apply to all homes in Scotland and cover smoke, heat, and carbon monoxide alarms, as appropriate. A general summary of the new requirements are:

  • One smoke alarm in the room most frequently used during the daytime.
  • One smoke alarm in every circulation space on each storey (e.g. hallways and landings).
  • One heat alarm in each kitchen.
  • The smoke and heat alarms must be ceiling-mounted and interlinked.
  • Where there is a carbon-fuelled appliance (e.g. boiler or gas cooker) or a flue, a carbon monoxide alarm is also required.
  • All types of alarm must be mains powered (fixed wiring, not a mains plug) OR powered by a tamper-proof lifetime battery.
  • All alarms must be regularly maintained and tested in accordance with the manufacturer's instructions.

For smoke and heat alarms, it can be compared to compliance with Grades D1, D2, or F1 (which can interlink) from BS 5839-6: 2019 – see our full guide to BS 5839 Part 6 for more details on types of alarm.

It is the property owner's responsibility to ensure these alarms are correctly installed and the guidance page on gov.scot outlines advice for various types of shared ownership and tenements.

Alarm Power Requirements

Alarm Power Requirements

To comply with the updated Scottish legislation, smoke and heat alarms must be Grade D2, D1, or F1. Battery-powered Grade F1 models can only be used if they support interlinking, so care must be taken to select suitable products as most Grade F1 alarms on the market are stand-alone models. Please see the table below for more details on the Grades of alarm.

Carbon monoxide alarms do not use the same Grade distinction as smoke and heat alarms, so you must simply pay attention to the manufacturer's information regarding power source. The power requirements for carbon monoxide alarms are the same as for smoke and heat alarms: either a tamper-proof battery that lasts the full lifespan of the product, or wired into a mains circuit in the property.

Any mains-powered alarms, regardless of sensor type, must be permanently wired into a mains circuit. Alarms which use a mains plug are not suitable for the updated regulations.

Smoke & Heat Alarm Grades

British Standard 5839 Part 6 is a code of practice relating to the design, installation and maintenance of fire detection systems in domestic premises. The standard also grades fire detection systems which reflects their functionality and capability. The below table details the up-to-date grades for fire detection systems.

Alarm Grades by Power Type (BS 5839 Part 6)

BS 5839-6: 2019 Grade Alarm Power Type Grade Description
Grade F1 Battery Operated (Lithium) System of one or more battery-powered smoke alarms (and heat alarms if required). The battery must be tamper-proof and last the full life of the alarm.
Grade F2 Battery Operated (Alkaline) System of one or more battery-powered smoke alarms (and heat alarms if required). The battery is user-replaceable and will not last the full life of the alarm.
Grade D1 Mains Powered (Lithium Back-up) System incorporating one or more interlinked mains-powered smoke alarms (and heat alarms if required), each with an integral stand-by supply. They can be hardwire-interlinked or radio-interlinked. The stand-by supply must be tamper-proof and last the full life of the alarm.
Grade D2 Mains Powered (Alkaline Back-up) System incorporating one or more interlinked mains-powered smoke alarms (and heat alarms if required), each with an integral stand-by supply. They can be hardwire-interlinked or radio-interlinked. The stand-by supply is user-replaceable and will not last the full life of the alarm.
Grade C Mains Powered (Dedicated Circuit + Back-up) System consisting of fire detectors and alarm sounders (which may be domestic smoke alarms) connected to a common power supply, comprising normal mains and stand-by supply, with central control equipment.
Grade A Mains Powered (Panel - Built-in PSU + Back-up) Fire detection system incorporating control and indicating equipment to BS EN 54-2, power supply to BS EN 54-4, and installed to BS 5839 Part 1, with some very minor exceptions.

For a full summary of BS 5839 Part 6, please visit 'Fire Detection and Fire Alarm Systems for Buildings'.

Interlink Compatibility

Interlink Compatibility

Hardwire Interlink

Smoke alarms, heat alarms, and carbon monoxide alarms powered from a mains circuit will usually also have an interlink or interconnect terminal next to the live and neutral wire terminals. If one alarm detects a fire or CO emergency it will pass the signal to the other units which will also sound an alarm throughout the property. This is particularly important for large buildings or if the bedroom is located far away from the kitchen. Outhouses and garages can also be connected into the radio-interlinked alarm system for added peace of mind.

Mains alarms can be connected to nearby lighting circuits for power, provided the light switch does not also turn off power to the alarm, but the interlink wire must be separate and not 'piggy-back' on a mains circuit as smoke, heat, and CO alarms are not designed to take 230V in their interlink terminal. If the property does not already have mains-powered alarms wired in, or if testing one of your existing alarms does not also cause the other alarms to sound, then an electrician will need to install a new interlink cable throughout the building.

Radio-Interlink

Radio-interlinked smoke alarms, heat alarms, and carbon monoxide alarms communicate with each other via radio frequency (RF). If one alarm detects a fire or CO emergency it will pass the signal to the other units which will also sound an alarm throughout the property. This is particularly important for large buildings or if the bedroom is located far away from the kitchen. Outhouses and garages can also be connected into the radio-interlinked alarm system for added peace of mind.

Radio-interlinked alarms are sometimes referred to as wireless alarms, although this can be confusing when dealing with radio-interlinked units wired into the mains power supply in a building. Radio-interlinked alarms can be battery powered or mains powered, and we even offer battery operated smoke alarms, heat alarms, and carbon monoxide alarms with radio-interlink that contain a sealed battery which lasts the full ten years of the alarm's life.

Compatibility

Only interlink alarms with alarms from the same model range and manufacturer. Alarms from different manufacturers are not compatible and attempting to interlink them could damage the alarms. If in doubt, check the instruction manual for the alarms before purchase – we provide PDF instruction manual downloads for the majority of smoke, heat, and CO alarms on our website.

Some ranges support mixing hardwired and radio-interlink alarms in the same network, which can reduce electrician costs and disruption. All alarms on each storey would be connected together via hardwire interlink, with one alarm on each storey also being connected to each other via RF signal. This could also save money on product costs, as mains-powered alarms without radio-interlink are usually the cheapest option for interlinking alarms. Please confirm before purchase if you require this functionality.

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