Matrix: Which expansion panels does the ICS-2003 panel support?
The ICS 2003 main panel supports the AP-22 assignment panel, XPL-12 lever key expansion panel and XPL-22 lever key expansion panels only. The expansion panels are connected to the main panel via a short DB-9F / DB-9M cable and each expansion panel requires its own PSU wall-wart (part # 400008) to operate. In ECS, to add expansion panels to an ICS-2003 main panel select the required ICS-2003 main panel and go to Advanced Settings in Matrix Hardware, select the Panel Options menu, click the drop-down arrow and select the appropriate expansion panel. This enables the expansion panel to be programmed from ECS. In Panel Programming select the ICS-2003 main panel required and then open the menu to the right of the main panel select to display the expansion panels list as shown below: 
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