Repeat methods two to four for all your old BRK alarms. We advise replacing all alarms within the method alongside one another to take care of optimum method Procedure; failing to do so may well compromise interlink efficiency. Addressable panels are generally Employed in much larger properties like shopping malls. https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/