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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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FireAngel Mains Powered Alarms with 9V Alkaline Back-up Battery 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
4 Customer Reviews

Save 24%

From: £11.80 inc VAT

£9.83 ex VAT

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BRK Mains Powered Smoke Alarms with Alkaline Back-up Battery 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
29 Customer Reviews

Save 19%

From: £15.59 inc VAT

£12.99 ex VAT

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Kidde Firex Mains Powered Smoke Alarms with Alkaline Back-up Battery 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
25 Customer Reviews

From: £17.75 inc VAT

£14.79 ex VAT

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Kidde Slick Mains Powered Smoke Alarms with Alkaline Back-up Battery 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
29 Customer Reviews

From: £20.39 inc VAT

£16.99 ex VAT

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Aico Mains Powered Smoke Alarms with Alkaline Back-up Battery 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
40 Customer Reviews

From: £22.79 inc VAT

£18.99 ex VAT

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BRK Mains Powered Smoke Alarms with Self-Charging Lifetime Back-up Battery 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
4 Customer Reviews

From: £31.19 inc VAT

£25.99 ex VAT

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Aico Mains Powered Smoke Alarms with Self-Charging Lifetime Back-up Battery 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
29 Customer Reviews

From: £33.47 inc VAT

£27.89 ex VAT

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FireAngel Pro Mains Powered Alarms with Lifetime Lithium Back-up Battery 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
11 Customer Reviews

Save 20%

From: £33.06 inc VAT

£27.55 ex VAT

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Mains Powered Radio-Interlink Smoke Alarms with Alkaline Backup 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
25 Customer Reviews

From: £63.83 inc VAT

£53.19 ex VAT

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Mains Powered Radio-Interlinked Smoke Alarms with Alkaline Back-up Battery - 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
21 Customer Reviews

From: £71.75 inc VAT

£59.79 ex VAT

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Mains Radio-Interlink Smoke & Heat Alarms with Self-Charging Lifetime Battery - FireAngel Pro WST230

  • 230V mains powered with lifetime self-charging 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
4 Customer Reviews

Save 10%

From: £74.51 inc VAT

£62.09 ex VAT

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Mains Radio-Interlink Smoke & Heat Alarms with Self-Charging Lifetime Back-up Battery - 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
11 Customer Reviews

From: £86.27 inc VAT

£71.89 ex VAT

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Mains Radio-Interlink Smoke & Heat Alarms with Self-Charging Lifetime Backup 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
4 Customer Reviews

From: £87.59 inc VAT

£72.99 ex VAT

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Nest Protect Mains Powered Smoke and Carbon Monoxide Alarm

  • Product Life: 10 years
  • Power: 230V mains powered with battery backup
  • Backup: 3 x 1.5V lithium batteries (included)
  • Warranty: Safelincs EXCLUSIVE 5 year warranty
  • Smart Wi-Fi alarm with combined smoke and CO detector
  • Sends alerts/alarms to smartphone and all other Nest alarms
  • Works with Nest Thermostat and Nest Cam
  • Kitemarked to BS EN 50291-1 (domestic use)
2 Customer Reviews

£109.00 inc VAT

£90.83 ex VAT

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LED Recessed Standard Downlight with Smoke Alarm - Lumi-Plugin

Supplied with a mains powered smoke alarm, this Lumi-Plugin downlight incorporates two features in one reducing the amount of ceiling clutter. Available with cool white or warm white lighting options.

  • Modern and compact downlight design
  • Supplied with a smoke alarm to fit within the light
  • Cool white or warm white lighting options available

£98.64 inc VAT

£82.20 ex VAT

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LED Recessed Emergency Downlight with Smoke Alarm - Lumi‑Plugin

The Lumi-Plugin switchable emergency downlight with smoke alarm combines two safety appliances into one neat, convenient and stylish unit.

  • Suitable for maintained and non-maintained operation
  • Two dimmable LED light output options – warm or cool white
  • Battery backups for both LED light and smoke alarm

£180.50 inc VAT

£150.42 ex VAT

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LED Recessed Standard Downlight with Heat Alarm - Lumi-Plugin

The standard downlight with heat alarm from Lumi-Plugin combines a stylish LED light with advanced heat detection in one appliance. Both the warm white and cool white LED lighting options are dimmable to suit the style and mood of any room.

  • Eliminate false alarms from normal cooking or working fumes
  • Heat alarm with battery backup for always-on protection
  • Made to the highest design and construction standards

£98.64 inc VAT

£82.20 ex VAT

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LED Recessed Emergency Downlight with Heat Alarm - Lumi‑Plugin

The Lumi-Plugin switchable emergency downlight with heat alarm combines a sleek LED light with advanced heat detection in one convenient product. Both features are fitted with battery backup.

  • Suitable for maintained and non-maintained operation
  • Choice of LED light output – warm white or cool white
  • Battery backup for both the light and heat alarm

£180.50 inc VAT

£150.42 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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