User Guide

Crestron C2N-IIF Intercom Interface
The C2N-IIF includes six logic-level inputs that can operate in one of
three modes.
• Essex mode: five Essex keypad panel inputs plus one discrete
switch closure input for use with five-button keypads (found in
select door station products) manufactured by Essex Electronics.
• Matrix mode: four-by-four matrix switch closure inputs plus two
discrete switch closure inputs for use with a four button-by-four
button electronic keypad.
• Discrete mode: six discrete switch closure inputs.
For more information on these modes, refer to “Definitions of IO Modes”
on page 31.
Application
The C2N-IIF is part of a facility communication system that can integrate
a door station intercom with a Crestron control system. The following
diagram illustrates how a C2N-IIF integrates with a facility intercom
system.
Simplified System Diagram
Operations & Installation Guide - DOC. 6235 Intercom Interface: C2N-IIF • 3