BRK 790MBX Mains Powered Hard Wired Heat Alarm with 9V Battery Back-up

(9 customer reviews)

£21.55 Ex VAT

Out of stock


BRK 790MBX Mains Powered Hard Wired Heat Alarm with 9V Battery Back-up

Mains powered hard wired heat alarm with 9V alkaline battery back up and a PUSH-FIT docking base system; designed to ensure quick and easy installation of base unit to the mains feed supply at installation stage (1st fix) and for quick and easy connection of alarm to base unit (2nd fix). The PUSH-FIT base provides spacious room for wiring in premises such as flats where concrete ceilings can be problematic. Top and side entries accommodate for either cable or mini trunking installations.

These alarms can be installed, along with linked smoke alarms, to provide a fire detection system to comply with British Standard BS 5839: Pt.6 Grade D “System incorporating one or more interlinked mains powered smoke alarms (and heat alarms if required), each with an integral stand-by supply. The interlink can be hardwired or radio-interlinked”.

Heat alarm are normally used in locations where the use of a smoke alarm would give rise to nuisance alarms, e.g. Kitchen, Garage, Boiler Rooms, Lofts etc.  Heat Alarms should not be used as the sole fire protection method and should only be used in conjunction with Smoke Alarms.

  • 230V hard wired mains powered heat detector / alarm
  • 9V alkaline battery back-up (included)
  • PUSH-FIT docking base. No separate pattress plate required
  • Advanced Class A2 thermistor sensing technology. Activates in range of +54°C to +70°C
  • Test and silence button
  • Low battery warning
  • Multi-alarm interlink (up to 12 smoke and heat units from list below)
  • Compatible with DS700RF wireless interlink base
  • LED operating indicators
  • 85db alarm
  • 5 year guarantee
  • BS EN14604: 2005 standard
  • CE mark

Dimensions: 142mm diameter x 70mm deep

Compatible devices in this range:

770MBX – Ionisation Smoke Alarm
760MBX – Optical Smoke Alarm
DS700RF – Wireless Interlink Base

Multi-alarm interlink:-

When more than one alarm is installed within the same building these should be connected together so that if one alarm is activated , all alarms sound.

The normal wiring method for these alarms is 6242Y 1 or 1.5mm (twin & earth) from the power supply, which can be either a dedicated circuit at the consumer unit or a local normally used lighting circuit, to the first alarm position then 6243Y 1 or 1.5mm (3 core & earth) from the first alarm to the second alarm and so on. The maximum circuit length is 250 metres.

Alternatively you can use the DS700RF Wireless Interlink Base to replace the interlink. Please note that when using interlink bases a permanent power supply is still required to each alarm position (using 6242Y 1 or 1.5mm twin & earth cable).

Replacement models:-

This model replaces the BRK 680MBX which is now out of production.

9 reviews for BRK 790MBX Mains Powered Hard Wired Heat Alarm with 9V Battery Back-up

  1. Shellie

    Hi there! This is kind of off topic but I need some help from
    an established blog. Is it difficult to set up your own blog?
    I’m not very techincal but I can figure things out pretty fast.
    I’m thinking about setting up my own but I’m not sure where to start.
    Do you have any points or suggestions? Thanks

    Here is my homepage; web hosting that

  2. Denisha

    I’m truly enjoying the design and layout of your blog.
    It’s a very easy on the eyes which makes it much more pleasant for me to
    come here and visit more often. Did you hire out a developer to create your theme?
    Superb work!

    my blog: quest bars this (

  3. Jonelle

    Hi there quest bars,,
    every one, here every one is sharing such familiarity, so it’s nice to read this website, and I used to visit this webpage daily.

  4. Glory

    Keep on writing, great job!

    Also visit my site – was asmr

  5. Hildred

    Thanks a lot for sharing this with all of us you actually realize what you are speaking about!
    Bookmarked. Kindly additionally talk over with my web
    site =). We can have a hyperlink trade contract among us

    Stop by my web-site: scoliosis surgery our

  6. Kerry

    It’s very straightforward to find out any topic on net as compared to textbooks, as
    I found this post at this web site.

    my web-site – asmr your (

  7. Flynn

    I always emailed this weblog post page to all my associates, because if like to read it afterward my links will too.

    Here is my blog: where asmr

  8. Rochelle

    Just wish to say your article is as astounding.
    The clearness in your post is asmr ( simply excellent and i can assume
    you’re an expert on this subject. Well with your permission let me to grab your RSS feed to keep up to date with forthcoming post.
    Thanks a million and please carry on the gratifying work.

  9. Jessie

    Your style is very unique compared to other people I’ve
    read stuff from. I appreciate you for posting when you have scoliosis surgery the opportunity, Guess I
    will just book mark this web site.

Add a review