Mains Powered Ionisation Smoke Alarm - BRK 670MBX - 14.99 ex VAT

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Mains Powered Ionisation Smoke Alarm with Alkaline Battery Back-up - BRK 670MBX

More than 20 in stock
14.99 ex VAT
17.99 inc VAT
Product Overview

Interconnectable with up to 12 compatible alarms, the BRK 670MBX is a mains powered ionisation smoke alarm with a 9V alkaline back-up battery. The 670MBX smoke alarm is quick to detect fast flaming fires, sounding an 85dB audible warning and is typically installed in landing areas. The BRK 670MBX is Kitemarked to the latest British Standards and has a 5 year manufacturer's warranty.

  • 230V mains powered smoke alarm
  • 9V alkaline back-up battery (included)
  • CE marked and Kitemarked to BS EN 14604
  • 5 year manufacturer's warranty
  • Suitable for installations complying to BS 5839-6: 2013 Grade D, E and F
  • Quick to detect fast flaming fires
  • Ideal for landing areas
  • Up to 12 units from the 600MBX series can be hard wire interconnected
  • An interlinked system provides the earliest warning of fire
  • Test and hush button facility
  • Supplied with fixings; 2 x screws and 2 x rawl plugs

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

Alarms from the Same Series

Model Number Type of unit Type of interconnection
670MBX Ionisation Smoke Alarm Hard wire interconnect
660MBX Optical Smoke Alarm Hard wire interconnect
690MBX Heat Alarm Hard wire interconnect
Technical Data

This is the technical data for the Mains Powered Ionisation Smoke Alarm with Alkaline Battery Back-up - BRK 670MBX.

Product Code BK670MBX
Weight 0.27kg
Dimensions (HxDia) 38x133mm
Sound Output 85dB at 3m
Back-Up Battery 9V alkaline
Operating Temperature +5 C to +38 C
Relative Humidity 10% to 85%

Data Sheets

FAQs (15)

Q. Do I need an ionisation or optical smoke alarm?

A. We recommend using an optical smoke alarm in hallways, as these are less likely to go off because of cooking fumes from a connected kitchen. Optical smoke alarms are also ideal for living rooms, dining rooms, bedrooms, as they are good at detecting smouldering fires from soft furnishings. For landings we recommend ionisation alarms. Heat alarms are designed for kitchens and garages. No alarms should be installed in bathrooms.

Q. Can air purifiers affect ionisation smoke alarms?

A. Yes, air purifiers may cause ionisation smoke alarms to sound falsely.

Q. Can I put my smoke alarm on the wall, or must it be mounted on the ceiling?

A. The best location to install your smoke alarm is in the centre of the ceiling rather than on the wall. During a fire, smoke initially rises and then spreads to the sides of the room. By installing the alarm on the ceiling, this ensures that you receive the earliest possible warning of a fire.

Q. How long do smoke alarms last before needing replacement?

A. It is recommended that smoke alarms are replaced after 10 years. This is because the sensors in the smoke alarms become less sensitive and may not activate when a fire is present.

Q. How long do the batteries last in smoke alarms?

A. The 9V alkaline batteries last 12~18 months. Lithium batteries will usually last 5x longer than their alkaline counterparts, achieving around 5 years lifetime. Some lithium cells are also rechargeable, and when used in a mains-powered alarm may last for the entire functional lifespan of the alarm. Newer alarm models may also feature a "sealed" lithium battery. These batteries are specialist components which are designed to not be removed or need replacing by the user, and have been tested by the alarm manufacturer to ensure they last for the lifetime of the alarm.

Please Note: the actual lifetime of your batteries depends on how often the alarms are tested or activated, as sounding the alarm draws more power than when the alarms are "waiting" to detect fire. You should also read your alarm's manual to make sure you only use the recommended types and brands of batteries, as failing to follow these instructions may cause the alarm to malfunction, not alerting you in the event of a fire, and might also invalidate the warranty.

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Pricing & Availability

Model Stock Levels Price Weight
Product Code: BK670MBX Stock Level:
More than 20 in stock

14.99 ex VAT

17.99 inc VAT


Customer Reviews

12 customers have rated this product and it has an overall rating of 4.8 out of 5

All our reviews are written by real customers that have purchased this product from us and are publsihed without modification.

5 / 5 Stars

Reviewed by: JP

Clear instructions easy to fit, working fine so far

Published on: 8th January 2017

5 / 5 Stars

Reviewed by: AD

Easy to install as replacements

Published on: 15th November 2016

5 / 5 Stars

Reviewed by: DG

Excellent product Did the job, easy to replace old for new.

Published on: 4th November 2016

5 / 5 Stars

Reviewed by: DB

Very neat and easy to install.

Published on: 25th October 2016

5 / 5 Stars

Reviewed by: GB

Easy to fit and does the job. Back up battery is an improvement on the earlier model.

Published on: 18th October 2016

5 / 5 Stars

Reviewed by: BB

fast and easy to order through to delivery

Published on: 27th August 2016

4 / 5 Stars

Reviewed by: DH

Very easy to retro fit. My original one stopped working, I needed a replacement. The new one fitted perfectly into the wall mounting and the existing wiring.

Published on: 19th August 2016

5 / 5 Stars

Reviewed by: MA

Easy to fit, work very well, very peasedwith the product. Electrician fitted them.

Published on: 1st August 2016

4 / 5 Stars

Reviewed by: DC

Very good Service Immediate Delivery Did not fit the spacer on the ceiling as the one was to shallow so had to make a space in the ceiling to accommodate the plug

Published on: 11th July 2016

5 / 5 Stars

Reviewed by: BM

Neat and tidy, easy to fit.

Published on: 11th July 2016

4 / 5 Stars

Reviewed by: -

As expected Easy to fit

Published on: 31st December 2015

5 / 5 Stars

Reviewed by: -

Great product

Published on: 13th November 2015

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Delivery Options

The following delivery options are available on this product.

Economy Delivery

Delivered in 2-3 working days by Royal Mail from 3.90 ex VAT - More info

Next Day Delivery

Delivered the next working day by UK Mail from 6.50 ex VAT - More info

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