Our expertise: ADT Self Setup's merchandise are built-in with Google Nest, which designed it uncomplicated for us to established it up and join the process to our smartphones and various appropriate equipment. The SBBRKSM easichange® package replaces the discontinued BRK 660MBX optical and 670MBX ionisation smoke alarms and fits on https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/