Crestron CEN-IO-COM-102 Quick Start Download Page 1

Quick Start

The Crestron® CEN-IO-COM-102, CEN-IO-DIGIN-104, CEN-

IO-IR-104, and CEN-IO-RY-104 allow for easy expansion of 

I/O ports within a system. Distribute these wired Ethernet 

modules anywhere in the installation via an available LAN 

connection.  
The CEN-IO-COM-102, CEN-IO-DIGIN-104, CEN-IO-IR-104, 

and CEN-IO-RY-104 share a similar installation procedure. 

For simplicity within this guide, the term CEN-IO is used 

except where noted.

Check the Box

Item

Qty

CEN-IO-COM-102, CEN-IO-DIGIN-104,  

CEN-IO-IR-104, or CEN-IO-RY-104

1

Bracket, Mounting, Integrated DIN Rail Clip, 

Black (P/N 4519035)

1

Screw, 6-32 x 3/8”, Pan Head, Phillips, Black  

(P/N 2007225)

2

CEN-IO-COM-102 Only

Connector, 5-Pin (P/N 2003577)

2

CEN-IO-DIGIN-104 Only

Connector, 5-Pin (P/N 2003577)

1

CEN-IO-IR-104 and CEN-IO-RY-104 Only

Connector, 8-Pin (P/N 2003580)

1

Install the Device

The Crestron® wired Ethernet module can be mounted on a 

DIN rail, mounted to any flat surface, or placed onto a flat 

surface. If necessary, use screws that are suitable for the 

mounting surface with a minimum head size of 6.5 mm.

NOTE: 

The wired Ethernet module can also be rack 

mounted. For rack mount installation, refer to 

the RMK-IFE-1U Installation Guide (Doc. 7615) at 

www.crestron.com/manuals

.

DIN Rail Mounting

DIN rail

Mounting 

bracket

Screws (2)

CEN-IO

NOTE: 

When mounting the device to a DIN rail, do not use 

the supplied screws to mount the bracket to the bottom of 

the wired Ethernet module. Removing the module from the 

DIN rail will not be possible.

Flat Surface Mounting 

Flat 

surface

Mounting 

bracket

Screws (2)

CEN-IO

Connect the Device

NOTE: 

Use PoE derived from a UL Listed source having 

LPS/Class 2 outputs.
Crestron provides four wired Ethernet modules. Each offers 

a different input/output connection. Modules are powered 

via Power over Ethernet (PoE). A ground screw is available, 

if needed.

CEN-IO-COM-102 Connections

LAN PoE:

Power and 

10BASE-T / 

100BASE-TX 

Ethernet from a 

PoE injector or 

Crestron control 

system

COM:

To 

RS-232

devices

Ground

CEN-IO-DIGIN-104 Connections

LAN PoE:

Power and 

10BASE-T / 

100BASE-TX 

Ethernet from a 

PoE injector or 

Crestron control 

system

DIGITAL

IN (1-4):

From

control 

devices

Ground

CEN‐IO-COM-102/CEN‐IO-DIGIN-104/CEN‐IO-IR-104/CEN‐IO-RY-104

Wired Ethernet Modules

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