Features: Eight on-board hardwire zones standard (15 when Zone Doubling feature is used) - Expandable to 48 total zones when used with hardwired and/or wireless expansion modules - Wireless keys can be programmed without using zones - 16 output devices - Relays (Model 4204 Relay Modules, or 4229 Expansion Module), and/or X-10® devices (when used with a 4300 Transformer) - Two low current on-board trigger outputs - 100 Event Log viewable at system keypads with time/date stamp - 48 system user codes assignable to either partition - Two independent partitions plus a common partition - Global Arming from any system keypad - Gotofunction to view or operate one partition from the other - Separate partition account numbers - Four installer configurable zone types allows the installer to create custom zone types by assigning all zone attributes