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Crestron part number CEN-IO-IR-104
The Crestron CEN-IO-IR-104 is a compact wired Ethernet I/O module that adds four IR and 1-way serial output ports to a Crestron control system. It is powered by PoE through its LAN connection and built in the stackable IFE micro enclosure for surface or DIN rail mounting.
Price on request
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Need it installed? Our Crestron certified engineers install, set up and programme everything we supply. A 4 hour visit is €440 and a full day €880, plus VAT.
About the Crestron CEN-IO-IR-104
Each of the four outputs can drive infrared at up to 1.2 MHz or send 1-way serial TTL/RS-232 (0 to 5 V) at up to 115.2k baud, for 1-way control of connected devices. All four share one 8-pin 3.5 mm detachable terminal block. The module communicates with the control system over the local network, so equipment can be controlled remotely from a computer or tablet.
As an IEEE 802.3at Type 1 (802.3af compatible) Class 0 PoE powered device drawing 2.3 W, it needs no local power supply or dedicated power wiring. A PWE-4803RU PoE injector placed in line with the LAN cable, or a Crestron PoE switch such as the CEN-SW-POE-5 or CEN-SWPOE-16, can provide power. The 100 Mbps Ethernet port supports TLS 1.2, SSL and local authentication, and setup is through Crestron Toolbox or a web browser.
The black and blue IFE micro enclosure measures 34 mm high, 128 mm wide and 73 mm deep (45 x 136 x 85 mm with the bracket) and weighs 180 g. It can stand freely, stack with other CEN-IO and IFE compliant devices, or fix to a surface or 35 mm DIN rail with the included bracket, occupying 8 DIN module spaces. For a Wi-Fi connected version, see the CEN-IO-IR-204.
Key features
- Four IR/1-way serial output ports
- IR up to 1.2 MHz; serial TTL/RS-232 (0 to 5 V) up to 115.2k baud
- Wired 100 Mbps Ethernet with PoE power (2.3 W)
- Remote control of connected equipment over the network
- Setup via Crestron Toolbox or a web browser
- TLS 1.2, SSL and local authentication
- Compact, stackable IFE micro enclosure
- Surface or 35 mm DIN rail mounting with included bracket
CEN-IO-IR-104 specifications
| IR/serial ports | 4 outputs on one 8-pin 3.5 mm detachable terminal block |
|---|---|
| IR | 1-way, up to 1.2 MHz |
| Serial | 1-way TTL/RS-232 (0 to 5 V), up to 115.2k baud |
| Network | 100 Mbps Ethernet (RJ-45), DHCP, SSL, TLS |
| Power | PoE, IEEE 802.3at Type 1 (802.3af compatible) Class 0 powered device; 2.3 W |
| Setup | Crestron Toolbox software or web browser |
| Mounting | Freestanding, stackable, surface or 35 mm DIN rail (EN 60715); 8 DIN module spaces (144 mm) |
| Dimensions | 34 x 128 x 73 mm (H x W x D); 45 x 136 x 85 mm with bracket |
| Weight | 180 g (6.4 oz) |
| Operating environment | 5 to 40 °C (41 to 104 °F); 10% to 90% RH non-condensing; 8 BTU/hr |
Part numbers on this page
| Part number | Version | Price | Add |
|---|---|---|---|
| CEN-IO-IR-104 | Standard | On request |
Where the CEN-IO-IR-104 is used
Works with the CEN-IO-IR-104
Crestron installed by 1Install
We supply, install and programme Crestron in homes and businesses across Ireland. These photos are from our own installations. See more in our projects, or budget a whole system with our Quote Builders for homes and meeting rooms.



Questions about the Crestron CEN-IO-IR-104
What does the Crestron CEN-IO-IR-104 do?
It adds four IR/1-way serial output ports to a Crestron control system over wired Ethernet. Each port can control a device by infrared at up to 1.2 MHz or by 1-way serial TTL/RS-232 at up to 115.2k baud, and the module is powered by PoE.
Can the CEN-IO-IR-104 receive feedback from devices?
No. Its four ports provide 1-way control only, by infrared up to 1.2 MHz or serial TTL/RS-232 (0 to 5 V) up to 115.2k baud. For 2-way RS-232 control and monitoring with handshaking, Crestron offers the CEN-IO-COM-102, which has two bidirectional COM ports.
How is the CEN-IO-IR-104 powered?
It is powered over the LAN cable as an IEEE 802.3at Type 1 (802.3af compatible) Class 0 PoE powered device, using 2.3 W. A Crestron PoE switch such as the CEN-SW-POE-5 or CEN-SWPOE-16, or a PWE-4803RU PoE injector, can supply the power.
What is the difference between the CEN-IO-IR-104 and CEN-IO-IR-204?
Both provide four IR/1-way serial ports with the same IR and serial ratings in the IFE micro enclosure. The CEN-IO-IR-104 connects by wired Ethernet and is powered by PoE, while the CEN-IO-IR-204 connects over Wi-Fi to a wireless access point and runs from an included 5 VDC power pack.
How is the module mounted?
The IFE micro enclosure can stand freely, stack with other CEN-IO and IFE compliant devices, or fix to a flat surface or 35 mm DIN rail using the included bracket, where it occupies 8 DIN module spaces (144 mm). Rack mount and pole mount options are also available.
How much is the Crestron CEN-IO-IR-104?
Crestron asks its dealers to give the price of the CEN-IO-IR-104 directly rather than publish it online. Add it to your quote list and we will send you a written quote, with delivery, and installation and programming if you need them.
Can 1Install supply, install and programme the CEN-IO-IR-104?
Yes. 1Install is an authorised Crestron Elite Partner with offices in Skerries, Co. Dublin and Cork. We can supply the CEN-IO-IR-104 on its own, or install, set up and programme it as part of your system. Installation visits are €440 for 4 hours or €880 for a full day, plus VAT and travel.
Does the CEN-IO-IR-104 come with a warranty?
Yes. Everything we supply is new, genuine Crestron with Crestron's standard warranty. If the CEN-IO-IR-104 develops a fault, contact us and we will handle the claim with Crestron. If we installed it, our workmanship is guaranteed for the lifetime of the system.
Is the CEN-IO-IR-104 in stock?
We order Crestron for each quote, so availability depends on Crestron's stock at the time. We check it before we quote and put the expected delivery date on your quote, so you know where you stand before you pay.
Can I buy the CEN-IO-IR-104 without installation?
Yes. We supply Crestron to end users, with or without installation. Like most Crestron devices of this type, it needs setting up or programming before it works in a system, and we can quote for that too.
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