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Replacement for BRK 670MBX Mains Powered Smoke Alarm

£19.56 inc VAT
£16.30 ex VAT
Product Overview

The BRK 770MBX alarm contains an identical replacement alarm head for your outgoing BRK 670MBX ionisation smoke alarm which uses replaceable alkaline batteries. The only difference is that the spare base supplied is a push-fit version rather than the twist-fit you already have installed. This replacement detector head fits directly onto your existing twist-fit base and is guaranteed to be compatible with your existing system.

The supplied 670MBX / 770MBX is an ionisation smoke alarm ideal for landings areas and detects fast flaming fires quickly. This alarm features a central test and hush button making maintenance very easy while a replaceable 9V alkaline backup battery ensures that it continues to operate even during a power failure, so you are never without protection.

  • Genuine BRK 670MBX replacement ionisation smoke alarm head
  • 9V alkaline backup battery (included)
  • CE and Kitemarked to BS EN 14604: 2005
  • Fits onto your existing BRK twist-fit alarm base (spare push-fit base included)
  • Suitable for installations complying to BS 5839-6: 2019 Grade D2
  • An interlinked system provides the earliest possible warning of fire
  • Test and hush button feature
  • Manuacturer's 5 Year Warranty
  • Product warranty and life commences from date of purchase

The simple installation process of the 670MBX / 770MBX 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 BK67RA
Alternative Product Codes BK670MBX, 670MBX, BRKEOA, BK670MBX-PUSH
Brand BRK
Back-Up Battery

Replaceable 9V Alkaline

Dimensions (HxDia)

38 x 133mm

Operating Temperature

+5°C to +38°C

Relative Humidity

10% to 85%

Sound Output



5 years

Weight 0.27kg
Product Datasheets

Pricing & Availability

Model Stock Price
Product Code: BK67RA Stock Level:
More than 20 in stock Expected dispatch: Today

£19.56 inc VAT

£16.30 ex VAT

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£4.79 inc VAT - Orders will be delivered in 3-5 working days by Hermes

Express Delivery

£7.91 inc VAT - Orders will be delivered in 1-2 working days by Hermes

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.

Direct Telephone 01507 464181