Repeat techniques 2 to 4 for all of your current aged BRK alarms. We propose replacing all alarms within the process with each other to take care of optimum system Procedure; failing to do so may compromise interlink efficiency. 02 will require being updated by 30th September 2021 in order https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/