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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 - No Compatible Replacement

Please Note: The manufacturer has withdrawn from the European market and is no longer supplying compatible alternatives.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 both the Welsh and Scottish 2022 legislation

£56.63 inc VAT

£47.19 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 (4)
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. 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.

Q. is there a different alarm sound for optical and heat sensors to tell you the difference in what kind of fire it is?
A.

There is only one alarm sound type when a fire is detected, when interconnected all smoke and heat alarms will sound. However only the triggered alarm will have a rapidly flashing red indicator.

Q. What sort of smoke alarm system would I need to install for a HMO?
A.

BS 5839-6 recommends that one or two storey HMOs with an individual floor area of no more than 200sqm (not the total of both floors) should have a Grade D smoke alarm system installed. Grade D refers to mains powered smoke alarms with a back up battery power supply. The alarms can be interlinked either by wire or by radio signal and the system does not require a separate fire alarm panel. For HMOs of 3 storey or higher, a Grade A panel system would need to be installed. This can cover the whole of the building, or can be used just for the communal areas with a separate Grade D system installed for the individual dwellings. For both applications, the level of cover should be a minimum of LD3 (in all escape routes) but this may change according to the fire risk assessment.

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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