What is Crestron io?
Crestron Mercury™
The only UC and AV all-in-one tabletop solution. Products / Control Hardware & Software / Hardware / Accessories. C2N-IO. Control Port Expansion Module. An outboard module for adding control ports to a Crestron® touch screen control system or any other Crestron control systems.
What is a Cresnet port?
> 24 Volt DC Cresnet powered. > Surface mount bracket included. The C2N-IO is a very compact device that adds control ports to any Crestron® 2-Series or 3-Series® control system. It connects via the Cresnet® control network and provides one RS-232, one IR, and two relay control ports.