They will arrange to visit your premises and recommend the ideal safety Remedy depending on your home and enterprise. The SBBRKSM easichange® package replaces the discontinued BRK 660MBX optical and 670MBX ionisation smoke alarms and fits onto your current BRK twist-in shape alarm baseplate so there is not any need https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/