Repeat steps 2 to four for your whole aged BRK alarms. We suggest replacing all alarms while in the process alongside one another to maintain optimum program operation; failing to do so may compromise interlink general performance. Make AUTOMATIONS & ROUTINES: Household automation is the new regular; Setup custom automations https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/