... This document was prepared and written by the Technical Documentation department at: Crestron Electronics, Inc 15 Volvo Drive Rockleigh, NJ 07647 1-888 -CRESTRON All brand names, product names and ... Operations & Installation Guide - Doc 8192 2-Series RS-232/422/485 Expansion Cards: C2COM-2/ 3 • 15 Crestron Electronics, Inc 15 Volvo Drive Rockleigh, NJ 07647 Tel: 888 .CRESTRON Fax: 201.767.7576 www .crestron. com ... for the RS422 signals on pins 1, 4, 6, and Operations & Installation Guide - Doc 8192 2-Series RS-232/422/485 Expansion Cards: C2COM-2/ 3 • 2-Series RS-232/422/485 Expansion Cards Crestron C2COM-2/ 3...