Matrix: Can I attach any expansion panel to an ICS-2003 panel?

The ICS-2003 and ICS-92 panels only support the following expansion panels in ECS software:
XPL-22 expansion panel with 20 lever keys (maximum of 60 additional keys per mains panel)
XPL-12 expansion panel with 10 lever keys (maximum of 60 additional keys per mains panel)
AP-22 assignment panel with 20 pushbutton keys (maximum of 60 additional keys per mains panel)
assignment panels and expansion panels can be combined to reach the 60 key limit
Note:  An ICS-92 or ICS-2003 cannot be added as an expansion panel to a mains panel. 


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