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BRK 760MBX Mains Powered Smoke Alarms

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Please Note: BRK have withdrawn from the European market and there is no compatible alternative that will fit into your existing system.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

£21.00 inc VAT

£17.50 ex VAT

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Product Overview

The BRK 760MBX smoke alarm with push-fit base is no longer available for sale. The BRK 600MBX series of alarms are identical in every way to the 700MBX series – the only difference is that the spare base supplied is a twist-fit version rather than the push-fit you already have installed. This replacement detector head fits directly onto your existing push-fit base and is guaranteed to be compatible with your existing system.

This BRK 660MBX is a mains powered optical smoke alarms which uses a replaceable 9V alkaline battery as backup. Optical smoke detectors such as the 660MBX are largely replacing the older ionisation smoke detection technology and are better at detecting slow, smouldering fires. This makes them ideal for most rooms in the house such as hallways, living rooms, bedrooms, and landings, including rooms that are usually covered by traditional ionisation alarms. The 760 and 660 alarm use the same base so your new alarm is guaranteed to fit and be compatible with your existing system.

  • Genuine BRK-made replacement for 760MBX alarm head
  • 230V mains powered with 9V alkaline back-up battery (included)
  • Optical sensor for more accurate detection and reduction in false activations
  • CE and Kitemarked to BS EN 14604: 2005
  • Fits onto your existing BRK push-fit alarm base
    • Twist-fit base included to keep as a spare
  • Interlink with up to 12 compatible alarms in your current system
  • Combined Test & Hush button feature
  • Manuacturer's 5 Year Warranty
  • Product warranty and life commences from date of purchase

The simple installation process of the 660MBX replacement alarm negates the need for an electrician, though you must ensure that mains power to all interlinked alarms is turned off before beginning work. The interlink wire can carry a live electric current between alarms if they are powered from different circuits.

Technical Data
Product Code BK76RA
Alternative Product Codes BK760MBX, 760MBX, BK660MBX, 660MBX, BRKEOA
Brand BRK
Back-Up Battery

Replaceable 9V Alkaline

Dimensions (HxDia)

44 x 140mm (including base)

Operating Temperature

+5 °C to +38 °C

Relative Humidity

10% to 85%

Sound Output


Weight 0.27kg
Product Datasheets

Key Product Features

What's Included?

Every BRK BK76RA is supplied with the following components.

  • 1 x BRK 660MBX optical alarm
  • 1 x Spare twist-fit base
  • 1 x 9V replaceable alkaline battery
  • 1 x Screw fixing set (screws & rawl plugs)
  • 1 x Instruction manual

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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