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Mains Powered Heat Alarm with Alkaline Back-up Battery - BRK 790MBX

Mains Powered Heat Alarm with Back-Up - BRK 790MBX
Mains Powered Heat Alarm with Back-Up - BRK 790MBX Supplied with easy to install, push-fit docking base

Discontinued Product - No Compatible Replacement

Please Note: BRK have withdrawn from the European market and there is no compatible alternative that will fit into your existing system. Since it is not possible to interlink alarms from different manufacturers, new alarms will be needed throughout. The recommended replacement for the whole discontinued BRK 700MBX range is the Kidde Firex series. This will require an electrician to replace your old BRK bases with new Kidde bases.

alternative product

Kidde Firex Mains Powered Alarms with Alkaline Battery

  • 230V mains powered with alkaline back-up battery
  • Available in 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 both the Welsh and Scottish 2022 legislation

£23.99 inc VAT

£19.99 ex VAT

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Product Overview

Fitted with a replaceable alkaline back-up battery, the BRK 790MBX (also known as 690MBX) is a mains powered heat alarm ideal for areas where a standard smoke alarm would be unsuitable, such as kitchens and garages. Supplied with an easy to install push-fit base, the alarm is designed to detect rapid increases in room temperature and up to 12 smoke and heat alarms can be interlinked via a hardwired connection to ensure an early warning if a fire is detected.

  • 230V mains powered heat alarm
  • 9V alkaline back-up battery (included)
  • 5 year manufacturers 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
  • Hardwire interlink with up to 12 compatible devices
  • Monitors rate of increase in room temperature
  • Suitable for installations needing to comply with BS 5839-6: 2019 Grade D2
  • Ideal for kitchens and garages
  • Test button facility
  • CE marked and Kitemarked to BS 5446-2: 2003
  • Dimensions (HxD): 68x140mm
  • Product warranty and life commences from date of purchase
Interlink

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

600 Series

Model Number Type of unit Type of interlink
660MBX Ionisation Smoke Alarm Hard wire interlink
670MBX Optical Smoke Alarm Hard wire interlink
690MBX Heat Alarm Hard wire interlink

700 Series

Model Number Type of unit Type of interlink
760MBX Ionisation Smoke Alarm Hard wire interlink
770MBX Optical Smoke Alarm Hard wire interlink
790MBX Heat Alarm Hard wire interlink
760MRL Ionisation Smoke Alarm Hard wire interlink
770MRL Optical Smoke Alarm Hard wire interlink
790MRL Heat Alarm Hard wire interlink
Technical Data
Product Code BK790MBX
Brand BRK
Back-Up Battery

9V alkaline
Dimensions (HxDia)

68x140mm
Operating Temperature

+5 °C to +38 °C
Relative Humidity

10% to 85% Relative Humidity
Sound Output

85dB
Weight 0.33kg
Product Datasheets
FAQs (2)
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. 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.

Excellent Warranty

This product is supplied with a 5 year manufacturers warranty as standard

Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

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