Income Preserving House Enhancement: With Konnected, you cut costs by reusing Anything you already very own; our alarm panels Never demand a battery (use bundled power adapter), month-to-month subscription or a conventional keypad The SBBRKSM easichange® kit replaces the discontinued BRK 660MBX optical and 670MBX ionisation smoke alarms and suits https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/