Why we selected Vivint: Vivint's Specialist installers evaluate your home ahead of suggesting gear, so you receive personalised service from day one. They even deliver Vitality administration services to save lots of you money on electrical costs. The SBBRKSM easichange® kit replaces the discontinued BRK 660MBX optical and 670MBX ionisation https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/