Mains Powered Heat Alarm with Alkaline Back-up Battery - BRK 790MBX - £26.39 inc VAT
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Mains Powered Heat Alarm with Alkaline Back-up Battery - BRK 790MBX

4 in stock Expected dispatch: Tomorrow
£26.39 inc VAT
£21.99 ex VAT
Product Overview

Fitted with a replaceable alkaline back-up battery, the BRK 790MBX (also known as 690MBX) is a mains powered heat alarm ideal for areas where a standard smoke alarm would be unsuitable, such as kitchens and garages. Supplied with an easy to install push-fit base, the alarm is designed to detect rapid increases in room temperature and up to 12 smoke and heat alarms can be interlinked via a hardwired connection to ensure an early warning if a fire is detected.

  • 230V mains powered heat alarm
  • 9V alkaline back-up battery (included)
  • Hardwire interlink with up to 12 compatible devices
  • Monitors rate of increase in room temperature
  • Suitable for installations needing to comply with BS 5839-6: 2013 Grade D, E and F
  • Ideal for kitchens and garages
  • 5 year manufacturers warranty
  • Test button facility
  • CE marked and Kitemarked to BS 5446-2
  • Dimensions (HxD): 68x140mm
Interlink

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

600 Series

Model Number Type of unit Type of interlink
660MBX Ionisation Smoke Alarm Hard wire interlink
670MBX Optical Smoke Alarm Hard wire interlink
690MBX Heat Alarm Hard wire interlink

700 Series

Model Number Type of unit Type of interlink
760MBX Ionisation Smoke Alarm Hard wire interlink
770MBX Optical Smoke Alarm Hard wire interlink
790MBX Heat Alarm Hard wire interlink
760MRL Ionisation Smoke Alarm Hard wire interlink
770MRL Optical Smoke Alarm Hard wire interlink
790MRL Heat Alarm Hard wire interlink
Technical Data

Technical Data

This is the technical data for the Mains Powered Heat Alarm with Alkaline Back-up Battery - BRK 790MBX.

Product Code BK790MBX
Weight 0.33kg
Dimensions (HxDia) 68x140mm
Sound Output 85dB at 3m
Back-Up Battery 9V alkaline
Operating Temperature +5 °C to +38 °C
Relative Humidity 10% to 85% Relative Humidity

Product Datasheets

The following datasheets are available for this product.

FAQs (8)

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. 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.

Q. When the test button is pressed on an interlinking smoke alarm will this cause all the other units to go off, too?

A. Yes, by pressing the test button on one alarm all the units in that family will also be activated. To 'teach' the units which other smoke alarms belong to the same family, the smoke alarms have to be set up together during the installation. This is done by pressing a 'housecoding button' or similar process.

Q. What sort of smoke alarm system would I need to install for a HMO?

A. BS 5839-6 recommends that one or two storey HMOs with an individual floor area of no more than 200sqm (not the total of both floors) should have a Grade D smoke alarm system installed. Grade D refers to mains powered smoke alarms with a back up battery power supply. The alarms can be interlinked either by wire or by radio signal and the system does not require a separate fire alarm panel. For HMOs of 3 storey or higher, a Grade A panel system would need to be installed. This can cover the whole of the building, or can be used just for the communal areas with a separate Grade D system installed for the individual dwellings. For both applications, the level of cover should be a minimum of LD3 (in all escape routes) but this may change according to the fire risk assessment.

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Pricing & Availability

Model Stock Price
Product Code: BK790MBX Stock Level:
4 in stock Expected dispatch: Tomorrow
Price:

£26.39 inc VAT

£21.99 ex VAT

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£4.68 inc VAT - Delivered in 2-3 working days by Hermes

Next Working Day Delivery

£7.80 inc VAT - Delivered the next working day by Hermes

For dispatch today order within

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
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