Crestron C2N-IO – Control Port Expander for Cresnet, 8 I/O, 2 COM, 2 IR, 2 Relay

Product Overview

The Crestron C2N-IO is a Cresnet-connected control port expander that adds 8 digital I/O (Versiports), 2 RS-232 COM ports, 2 IR/Serial ports, and 2 relay outputs to a Crestron 4-Series control system, expanding the native I/O and control port capacity of the primary processor for installations where the processor’s onboard ports are insufficient for all connected devices. It connects to the 4-Series processor via Cresnet bus and is recognized by SIMPL# programs as if the expanded ports were directly on the processor, requiring no additional Ethernet switch ports or IP addresses per expander.

Product Description

Commercial AV systems frequently require more control ports than a single processor provides — multiple RS-232-controlled display processors, multiple IR-controlled devices at different room positions, numerous contact closure inputs from push buttons and occupancy sensors, and multiple relay outputs for screen lifts and power contactors. The C2N-IO aggregates 8 Versiport digital I/O, 2 RS-232 COM, 2 IR/Serial, and 2 relay ports in a single Cresnet expansion device that connects to the 4-Series processor via the Cresnet bus. All ports are programmed in SIMPL# exactly as if they were directly on the primary processor, simplifying programming while extending the port count. The Cresnet bus connection means no Ethernet switch port or IP address is needed per C2N-IO — the device simply adds to the Cresnet network alongside keypads, touch screens, and other Cresnet peripherals in the same bus topology.

Key Features

• 8 Versiport Digital I/O: Configurable as digital input (dry contact) or digital output (contact closure) for push buttons, occupancy sensors, door contacts, and relay feedback.
• 2 RS-232 COM Ports: Bidirectional RS-232 serial for display processors, DSPs, and other serial-controlled AV devices beyond the processor’s native COM count.
• 2 IR/Serial Ports: IR blaster outputs or serial control for IR-commanded displays and devices at positions beyond the processor’s native IR output count.
• 2 Relay Outputs: Dry contact relay for projection screens, display lifts, and power contactors beyond the processor’s native relay count.
• Cresnet Bus Connection: No Ethernet port or IP address per expander — connects via 4-conductor Cresnet bus wiring to the 4-Series processor.
• Transparent SIMPL# Integration: All expanded ports appear in the SIMPL# program as processor-native ports — no special programming or drivers required for the expander.

Technical Specifications

Competitor comparison: not applicable for this product.

Frequently Asked Questions

How many C2N-IO expanders can connect to a single 4-Series processor?
The number of Cresnet devices (including C2N-IO) that can connect to a single 4-Series processor is determined by the processor’s Cresnet device limit and power budget. Refer to the processor data sheet or contact Creation Networks for Cresnet expansion guidance for your system design.

What is the warranty?
Crestron provides a standard 3-year limited warranty. Contact Creation Networks for warranty details.