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Mains Smoke Alarms

New residential buildings, conversions, HMOs and some small businesses require mains powered interlinked smoke alarms. Our 230V smoke detectors and heat alarms (with wire interlink or radio interlink between units) from leading brands like Kidde, BRK, and EI Electronics (AICO) fulfill the requirements of BS 5839 Part 6.

Most existing properties will need Grade D alarms according to previous Building Regulations, but all mains-powered alarms sold by Safelincs also satisfy Grades D1 & D2 from the new 2019 revision. Please see our guide to BS 5839-6: 2019 for more information on Grades of alarm.

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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

Save 24%

From: £11.80 inc VAT

£9.83 ex VAT

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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

Save 38%

From: £11.99 inc VAT

£9.99 ex VAT

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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

From: £17.75 inc VAT

£14.79 ex VAT

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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

From: £20.39 inc VAT

£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

From: £22.79 inc VAT

£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 Self-Charging 10 Year Back-up Battery - Kidde Firex KF-R Series

  • 230V mains powered with self-charging lithium back-up battery
  • Available in Ionisation, Optical and Heat versions
  • Interlinks with up to 24 units
  • Suitable for BS 5839-6: 2013 Grade D, E and F installations
  • Kitemarked and CE marked
  • Also suitable for the 2021 Scottish legislation
9 Customer Reviews

From: £31.43 inc VAT

£26.19 ex VAT

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Mains Powered Smoke Alarms & Heat Alarms with Self-Charging 10 Year Back-up Battery - Aico Ei160e Series

  • 230V mains powered with self-charging lithium battery – never needs replacing!
  • Available in ionisation, optical and heat versions
  • Made in Ireland by Ei Electronics
  • Interlinks with up to 12 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
29 Customer Reviews

From: £33.47 inc VAT

£27.89 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

Save 20%

From: £33.06 inc VAT

£27.55 ex VAT

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Mains Powered Smoke Alarms & Heat Alarms with Self-Charging 10 Year Back-up Battery - Aico Ei3000 Series

  • Available in Optical, Heat, Combined Optical & Heat, and Combined Heat & CO
  • Mains powered alarms with sealed lithium back-up battery
  • AudioLINK technology fitted as standard
  • Interlinks with up to 12 compatible devices
  • Compatible with Ei3000MRF SmartLINK Module for radio-interlinking
  • Suitable for BS 5839-6: 2019 Grade D1 installations
  • Also suitable for the 2021 Scottish legislation
1 Customer Reviews

£45.59 inc VAT

£37.99 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

From: £63.83 inc VAT

£53.19 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

From: £71.75 inc VAT

£59.79 ex VAT

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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 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

Save 10%

From: £74.51 inc VAT

£62.09 ex VAT

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Mains Radio-Interlink Smoke Alarms & Heat Alarms with Self-Charging 10 Year Back-up Battery - Aico Ei160eRF Series

  • 230V mains powered with self-charging lifetime back-up battery
  • Available in ionisation, optical and heat versions
  • Made in Ireland by Ei Electronics
  • Wirelessly interlinks with up to 12 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
11 Customer Reviews

From: £98.27 inc VAT

£81.89 ex VAT

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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

From: £87.59 inc VAT

£72.99 ex VAT

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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 Smoke Alarms

Mains Smoke Alarms

Mains smoke alarms or mains powered smoke alarms are supplied with 230V from the mains wiring of a building. They can be wired into a special alarm wiring loop coming directly from the fusebox or they can be fed from the nearest light fitting. Supply from the light fitting is recommended and cheaper. However, care must be taken that the supply is not wired incorrectly and the smoke alarm is by mistake supplied by a 'switched' electric cable, otherwise low battery warnings might ensue. Mains smoke alarms with a form of interlink (wire interlink between units or radio-interlink) fulfil BS5839 part 6 grade D required for extensions, new domestic buildings, let homes, HMOs and many more applications.
Back-Up Batteries

Back-Up Batteries

All our mains powered smoke detectors and heat alarms have back-up batteries. This ensures that the smoke alarms are still working even if the mains power fails. These back-up batteries are either non-rechargeable (eg alkaline batteries), in which case they need replacing every year or two, or they contain sealed-in re-chargeable lithium back-up batteries which are re-charged with a trickle charge. Sealed-in batteries cannot be replaced at the end of their lifespan which is usually ten years.

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