If applicable, a releasing panel will activate relays to dispense pre-action sprinkler units or Particular hazard suppression such as a chemical agent or water mist on to the shielded Place. The SBBRKSM easichange® package replaces the discontinued BRK 660MBX optical and 670MBX ionisation smoke alarms and matches onto your present https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/