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
Q. Can I put my smoke alarm on the wall, or must it be mounted on the ceiling?
The best location to install your smoke alarm is in the centre of the ceiling rather than on the wall. During a fire, smoke initially rises and then spreads to the sides of the room. By installing the alarm on the ceiling, this ensures that you receive the earliest possible warning of a fire.
Q. What is the best way to test my alarm?
We recommend testing alarms by pressing the test button built-in to the unit, as this is designed to simulate the detection of the target stimuli (usually smoke, heat, or CO) at the alarm sensor. You should test your alarms regularly to ensure they are protecting building occupants, preferably every week. For more detailed guidance, check the manual included with your alarm.
Q. Do you need an electrician to connect mains powered smoke alarms?
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?
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?
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.