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Mains Powered Ionisation Smoke Alarm with Self-Charging 10 Year Back-up Battery - BRK 770MRL

Discontinued Product

The manufacturer has withdrawn from the European market and is no longer supplying compatible alternatives. Since it is not possible to interlink alarms from different manufacturers, the recommended replacement for the whole discontinued BRK 700MRL range is the Aico Ei3000 series.

alternative product

Mains Powered Smoke Alarms with Lithium Back-up 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 2022 Scottish legislation

£45.59 inc VAT

£37.99 ex VAT

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Product Overview

The BRK 770MRL (also known as 670MRL) mains powered ionisation smoke alarm provides quick detection of fast flaming fires and is typically installed in upstairs landing areas. Fitted with a sealed self-charging lithium back-up battery, the 770MRL does not require a battery change for the life of the alarm, making it ideal for properties where replacing batteries would be inconvenient. Up to 12 alarms from the BRK 700MRL series can be interlinked by wire within a single system.

  • Power: 230V mains powered with back-up battery
  • Backup Battery: Re-chargeable lithium battery lasts the lifetime of your alarm - GUARANTEED
  • Warranty: 5 year manufacturer's warranty
  • Please note that BRK and First Alert are no longer manufacturing new stock for the European Market and while the products may have a 2018/19 manufacturing date they still provide a full 10 year lifespan and full warranty cover from date of purchase
  • CE marked and Kitemarked to BS EN 14604
  • Suitable for installations complying to BS 5839-6: 2019 Grade D1
  • Quick to respond to fast flaming fires
  • Suitable for installing in upstairs landing areas
  • Up to 12 alarms from the 700MRL series can be hard wire interlinked
  • An interlinked system provides the earliest possible warning of fire
  • Test and hush button facility
  • Easy to install push-fit base plate
  • Product warranty and life commences from date of purchase
  • This alarm is also suitable for the updated 2022 Scottish legislation for fire alarms in homes

Please note: this product is not a direct upgrade from the 670MBX smoke alarm. Upgrading from a BRK 600MBX series alarm featuring an alkaline battery and twist-on base may require rewiring by a qualified electrician.

Interlink

The table below shows all the units that can interlink with the BRK mains powered smoke and heat alarms.

Alarms from the Same Series

Model Number Type of unit Type of interlink
770MRL Ionisation Smoke Alarm Hard wire interlink
760MRL Optical Smoke Alarm Hard wire interlink
790MRL Heat Alarm Hard wire interlink
Technical Data
Product Code BK770MRL
Alternative Product Codes BK770, 770, 770MRL, BK770MRL
Brand BRK
Back-Up Battery

Self-charging Lithium Battery

Dimensions (HxDia)

53x140mm

Operating Temperature

+5°C to +38°C

Relative Humidity

10% to 85%

Sound Output

85dB

Warranty

5 Years

Weight 0.28kg
Product Datasheets
FAQs (11)
Q. Do I need an ionisation or optical smoke alarm?
A.

We recommend using an optical smoke alarm in hallways, as these are less likely to go off because of cooking fumes from a connected kitchen. Optical smoke alarms are also ideal for living rooms, dining rooms, bedrooms, as they are good at detecting smouldering fires from soft furnishings. For landings we recommend ionisation alarms. Heat alarms are designed for kitchens and garages. No alarms should be installed in bathrooms.

Q. Why do your mains powered alarms have batteries?
A.

All our mains powered alarms have a battery backup. Although mains powered alarms without this option do exist (BS5839 part 6 grade E), we regard them as far too dangerous, as a lot of fires are caused by electrical faults leaving the building unprotected against fire if the smoke alarms have no backup battery. With our mains powered alarms you will always be protected.

Q. Can I put my smoke alarm on the wall, or must it be mounted on the ceiling?
A.

The best location to install your smoke alarm is in the centre of the ceiling rather than on the wall. During a fire, smoke initially rises and then spreads to the sides of the room. By installing the alarm on the ceiling, this ensures that you receive the earliest possible warning of a fire.

Q. How long do smoke alarms last before needing replacement?
A.

It is recommended that smoke alarms are replaced after 10 years. This is because the sensors in the smoke alarms become less sensitive and may not activate when a fire is present.

Q. Do you need an electrician to connect mains powered smoke alarms?
A.

It is necessary that an electrician installs mains powered smoke alarms.

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Customer Reviews

4 customers have given this product an overall rating of 5 out of 5

Reviews by real customers

All of our product reviews are written by real customers that have purchased this product from us and are published without modification.

Rating: 5 / 5 Stars

Reviewed by: K S

Great product and simple to install onto an existing plate if you are replacing an old product such as DICON Watch out for the battery tag, there is a clear one which implies you pull it out and it is then connected. In actual fact you need to take the battery out and connect it. Not sure what the first tag is for.

Published on: 18th March 2019

Rating: 5 / 5 Stars

Reviewed by: M C

Exellant replacement for my old smoke alarms which were the type that needed the battery replacing every few years.

Published on: 5th November 2018

Rating: 5 / 5 Stars

Reviewed by: A T

Does what it says on the box!

Published on: 14th October 2018

Rating: 5 / 5 Stars

Reviewed by: M J

Fits in place of an older model. does the job I need it to do.

Published on: 27th April 2016

Looking for more information?

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Direct Telephone 01507 464181