Can I use another GC3 as a secondary panel?

Without the ability for a secondary touch panel with the GC3, can i use another GC3 as a secondary panel?

Is the process for pairing like GC2 and the TS1 panel or is it more involved?

No, only one primary control panel can be used per system. 2GIG is developing a secondary touchscreen for the GC3, but we do not have release date information.

At the current time, the 2GIG PAD1 keypad can be used, but note that it just allows arm/disarm and provides no feedback.