Ideal for areas where a standard smoke alarm would be unsuitable, such as kitchens and garages, the BRK 690MBX is a mains powered heat alarm designed to detect rapid increases in room temperature. Kitemarked to the latest standards and with a 5 year manufacturer's warranty, the BRK 690MBX also benefits from multi-alarm interlink feature, meaning that it can be hard wire interlinked with up to 12 compatible smoke and heat alarms within a system.
- 230V mains powered heat alarm
- 9V alkaline back-up battery (included)
- Includes slimline twist-fit base suitable for flush mounting
- CE marked and Kitemarked to BS 5446-2
- 5 year manufacturer's warranty
- Suitable for installations complying to BS 5839-6: 2013 Grade D, E and F
- Ideal for kitchens and garages where a smoke alarm would be unsuitable
- Monitors rate of increase in room temperature
- Up to 12 600MBX series smoke and heat alarms can be hard wire interlinked
- An interlinked system provides the earliest possible warning of fire
- Test button facility
- Suitable replacement for the DETA 1155 Heat Alarm
- Supplied with fixings; 2 x screws and 2 x rawl plugs
Please note: for surface-mounted wiring such as trunking the base plate included with this alarm is not suitable; please see the BRK 790MRL with push-fit base instead.
The table below shows all the units that can interlink with the BRK mains powered smoke and heat alarms.
Alarms from the Same Series
||Type of unit
||Type of interlink
||Ionisation Smoke Alarm
||Hard wire interlink
||Optical Smoke Alarm
||Hard wire interlink
||Hard wire interlink
This is the technical data for the Mains Powered Heat Alarm with Alkaline Back-up Battery - BRK 690MBX.
|Alternative Product Codes
||BK690MBX, 690MBX, DETA1155, 1155
||85dB at 3m
||+5 °C to +38 °C
||10% to 85%
The following datasheets are available for this product.
Q. What smoke alarm should I use in a bedroom with an en suite bathroom?
A. It is usually recommended to install an optical smoke alarm in a bedroom. This is because optical smoke alarms are slightly quicker at detecting slow smouldering fires that can originate from upholstery type materials and over-heated wiring. Also, an optical smoke alarm would be less likely to sound a false alarm than an ionisation would, if steam/water droplets were present from the bathroom. Detectors should be installed as central to the room as possible; however for your application I would also consider the position of the en suite to make sure that the detector is not in the direct path of the joining door. This is just to try and avoid the chances of a false alarm. No detector is designed for use in bathroom areas.
Q. How do I safely dispose of my old smoke alarms?
A. Safelincs is signed up to Valpak's WEEE (Waste Electrical and Electronic Equipment) Distributor Take-Back Scheme (Registration ID: 7370). Private households can therefore drop off their electronic and electrical fire safety waste at their municipal recycling centre when they are purchasing new products from us. To find your nearest recycling centre, please visit www.recycle-more.co.uk.
Q. Can the mains powered smoke alarm range be connected to mains power via the lighting circuit?
A. Yes, hard-wired mains powered alarms can be wired to the unswitched live feed of the nearest frequently used lighting circuit.
Q. is there a different alarm sound for optical and heat sensors to tell you the difference in what kind of fire it is?
A. There is only one alarm sound type when a fire is detected, when interconnected all smoke and heat alarms will sound. However only the triggered alarm will have a rapidly flashing red indicator.
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.
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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.
3 customers have rated this product and it has an overall rating of 4.7 out of 5
All our reviews are written by real customers that have purchased this product from us and are published without modification.
Reviewed by: CA
Arrived safely and seems to work!
Fitted my existing base as a replacement. Quick to fit.
Published on: 19th May 2019
Reviewed by: MJ
Nice unit...very easy to fit (as a refit)
Published on: 19th July 2017
Reviewed by: -
A little pricey but a great product, you get what you pay for.
Published on: 24th December 2015