Our electricians are all completely experienced and expert and all our do the job is accompanied by NIC EIC certification. The SBBRKSM easichange® kit replaces the discontinued BRK 660MBX optical and 670MBX ionisation smoke alarms and matches on to your current BRK twist-fit alarm baseplate so there's no need to https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/