To learn more about how ADT can help safeguard your small business, enter your details and certainly one of our Safety Consultants is going to be in contact. The SBBRKSM easichange® package replaces the discontinued BRK 660MBX optical and 670MBX ionisation smoke alarms and suits on to your present BRK https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/