Comrex STAC 6 to 12 Expansion Kit
STAC6 to STAC12 Expansion Kit (9900-0030)

This expansion kit converts the Comrex Stac6 to a Stac12 in the field. Includes an expansion card and control surface sidecar, converting from a 6-line to 12-line system.

Comrex STAC12 Extra Control Surface
STAC12 Extra Control Surface (9900-0025)

Additional control surface for the Stac12 telephone system. Attach up to 4 control surfaces to each Stac system.