p/n 60112035000 costing about £288 plus a mounting kit p/n 63512938044 at about £40. Manual.
You can make massive savings on the Meta DefComT alarm system by buying it here. You can also find it on ebay at ridiculously low price. This is the exact same hardware, even the light in the dashboard works out of the box. The £40 mounting kit is not strictly necessary, as you can install everything with velcro. See this install report.