Repeat actions 2 to four for all of your current old BRK alarms. We endorse replacing all alarms within the system with each other to take care of ideal technique operation; failing to do so might compromise interlink efficiency. The SBBRKSM easichange® kit replaces the discontinued BRK 660MBX optical and https://bookmarkgenious.com/story18679678/the-best-side-of-addressable-fire-alarm-control-panels