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Mains Powered Ionisation Smoke Alarm with Alkaline Back-up Battery - BRK 770MBX
Discontinued Product - No Compatible Replacement
Please Note: BRK have withdrawn from the European market and there is no compatible alternative that will fit into your existing system. Since it is not possible to interlink alarms from different manufacturers, new alarms will be needed throughout. The recommended replacement for the whole discontinued BRK 700MBX range is the Kidde Firex series. This will require an electrician to replace your old BRK bases with new Kidde bases.
alternative product
Kidde Firex Mains Powered Alarms with Alkaline Battery
- 230V mains powered with alkaline back-up battery
- Available in Ionisation, Optical and Heat versions
- Interlink with up to 24 units
- Suitable for BS 5839-6: 2019 Grade D2 installations
- Kitemarked and CE marked
- Please note: alarms are sold individually
- Also suitable for the 2022 Scottish legislation
£23.99 inc VAT
£19.99 ex VAT
Product Overview
Interlink
Technical Data
FAQs (6)
Fitted with a replaceable alkaline back-up battery, the BRK 770MBX (also known as 670MBX) is a mains powered ionisation smoke alarm supplied with an easy to install push-fit base plate. Most suitable for detecting fast flaming fires, this alarm comes with a 5 year manufacturer's guarantee and can interlink with up to 12 other compatible devices (by wire). The BRK 770MBX is CE and Kitemarked to BS EN 14604 and has a test and alarm silence feature.
- 230V mains powered ionisation smoke alarm
- 9V alkaline back-up battery (included)
- 5 year manufacturer's warranty
- Please note that BRK and First Alert are no longer manufacturing new stock for the European Market and while the products may have a 2018/19 manufacturing date they still provide a full 10 year lifespan and full warranty cover from date of purchase
- Hardwire interlink with up to 12 compatible devices
- Test and alarm silence button
- CE and Kitemarked to BS EN 14604: 2005
- Suitable for detecting fast flaming fires
- Suitable for installations needing to comply with BS 5839-6: 2019 Grade D2
- Supplied with easy to install push-fit base plate
- Dimensions (HxD): 53x140mm
- Product warranty and life commences from date of purchase
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 |
| Product Code | BK770MBX |
|---|---|
| Brand | BRK |
| Back-Up Battery | 9V alkaline |
| Dimensions (HxDia) | 53x140mm |
| Operating Temperature | +5 °C to +38 °C |
| Relative Humidity | 10% to 85% Relative Humidity |
| Sound Output | 85dB |
| Weight | 0.32kg |
| Product Datasheets |
Q. Do you need an electrician to connect mains powered smoke alarms?
A.
It is necessary that an electrician installs mains powered smoke alarms.
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. If a false alarm goes off can pressing the hush button on any of the interlinking alarms stop all the units beeping?
A.
No, to stop the alarms from sounding the hush button on the unit that started the process needs to be pushed. Pressing any other unit will just silence that one unit. The unit can be identified by the rapidly flashing red LED.
Q. Can a smoke alarm be fitted with a sticky adhesive pad in a let property?
A.
The sticky pad is suitable for all battery operated smoke alarms. However, we cannot judge if battery alarms are suitable for your let property, as let properties usually require mains powered alarms. There is some advice to this in the governments guides to fire risk assessments. http://www.safelincs.co.uk/Fire-Risk-Assessment/
Also see the LACoRS guide for let properties.
Q. How long do the batteries last in smoke alarms?
A.
Show All The 9V alkaline batteries and AA alkaline batteries generally last 12 to 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.
Customer Reviews
1 customer has given this product an overall rating of 4 out of 5
Reviews by real customers
All of our product reviews are written by real customers that have purchased this product from us and are published without modification.Rating: 4 / 5 Stars
Reviewed by: S V
Prompt service
Published on: 19th April 2021
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