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Mains Powered Heat Alarm with Self-Charging 10 Year Back-up Battery - BRK 790MRL

Mains Powered Heat Alarm with Sealed Lifetime Back-up Battery - BRK 790MRL

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The manufacturer has withdrawn from the European market and is no longer supplying compatible alternatives.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 790MRL (also known as 690MRL) mains powered heat alarm with self-charging lithium back-up battery is Kitemarked to the latest British Standards and has a 5 year manufacturer's warranty. Up to 12 smoke and heat alarms from the BRK 700MRL series can be interlinked (via cable) within a single system, allowing all alarms to activate if one is triggered by fire. The 790MRL is suitable for installing in kitchen areas and garages.

  • Power: 230V mains powered with lifetime back-up battery
  • Backup Battery: Self-charging lithium battery lasts the lifetime of your alarm - GUARANTEED
  • Warranty: 5 year 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 5446-2: 2003
  • Suitable for installations complying to BS 5839-6: 2019 Grade D1
  • Detects increases in room temperature
  • Ideal for kitchens and garages where a smoke alarm would be unsuitable
  • A maximum of 12 alarms from the 700MRL series can be interlinked (via cable)
  • An interlinked system provides the earliest warning of fire
  • Test 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 690MBX heat 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 BK790MRL
Alternative Product Codes BK790, 790, 790MRL, BK790MRL
Brand BRK
Back-Up Battery

Self-charging Lithium Battery
Dimensions (HxDia)

68x140mm
Operating Temperature

+5°C to +38°C
Relative Humidity

10% to 85%
Sound Output

85dB
Warranty

5 Years
Weight 0.34kg
Product Datasheets
FAQs (8)
Q. I want to install an interlinked smoke alarm system throughout my home, but what type of smoke alarms do I need in different rooms?
A.

We recommend a heat alarm in the kitchen, optical alarms in living rooms and hallway and ionisation alarms on landings.

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

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

Q. When the test button is pressed on an interlinking smoke alarm will this cause all the other units to go off, too?
A.

Yes, by pressing the test button on one alarm all the units in that family will also be activated. To 'teach' the units which other smoke alarms belong to the same family, the smoke alarms have to be set up together during the installation. This is done by pressing a 'housecoding button' or similar process.

Q. If a false alarm goes off can pressing the hush button on any of the interlinking alarms stop all the units beeping?
A.

No, to stop the alarms from sounding the hush button on the unit that started the process needs to be pushed. Pressing any other unit will just silence that one unit. The unit can be identified by the rapidly flashing red LED.

Q. Can a smoke alarm be fitted with a sticky adhesive pad in a let property?
A.

The sticky pad is suitable for all battery operated smoke alarms. However, we cannot judge if battery alarms are suitable for your let property, as let properties usually require mains powered alarms. There is some advice to this in the governments guides to fire risk assessments. http://www.safelincs.co.uk/Fire-Risk-Assessment/
Also see the LACoRS guide for let properties.

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Customer Reviews

1 customer has 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: M R

Easy fix to replace previous unit Should be a better product as the batteries are replaceable.

Published on: 6th March 2021

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