Fitted with a sealed lifetime self-charging lithium back-up battery, the BRK 700MRL series of mains powered smoke and heat alarms are Kitemarked to the latest British Standards and have a 5 year manufacturer's warranty. Suitable for installations complying with BS 5839-6 Grade D1, up to 12 BRK mains powered alarms can be hard wire interlinked within a single system, providing early warning of danger.
- 230V mains powered with lifetime self-charging back-up battery
- Kitemarked to and
- 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
- Suitable for installations complying to Grade D1
- Three versions available:
- Ionisation smoke alarm responds quickly to fast flaming fires - used in landing areas
- Optical smoke alarm responds quickly to smouldering fires - used in bedrooms, living rooms and hallways
- Heat alarm responds to rate of increase in room temperature - used in kitchens and garages
- Test and Hush Button Feature (Heat alarms only have Test functionality)
- A maximum of 12 alarms can be hard wire interlinked
- Supplied with a push/click style base
- Please note: Alarms sold separately
- This alarm is also suitable for the updated 2022 Scottish legislation for fire alarms in homes
Please note: these products are not a direct upgrade from the 660MBX, 670MBX, or 690MBX alarms. Upgrading from a BRK 600MBX series alarm featuring an alkaline battery and twist-on base .
The table below shows all the units that can interlink with the BRK mains powered smoke and heat alarms.
Alarms from the Same Series
Model Number |
Type of unit |
Type of interlink |
770MRL |
Ionisation Smoke Alarm |
Hard wire interlink |
760MRL |
Optical Smoke Alarm |
Hard wire interlink |
790MRL |
Heat Alarm |
Hard wire interlink |