STARTECH.COM Hdmi Over Cat5 Video Extender With Rs232 And Ir Control

Redcorp# 75645830 Article# ST121UTPHD2
 Search More  Audio/Video Repeater/Extender
Redcorp# 75645830 Article# ST121UTPHD2
€ 358.55 Excl. VAT
Starts from € 349.55 Details
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Hdmi STARTECH.COM Hdmi Over Cat5 Video Extender With Rs232 And Ir Control
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The HDBaseT extender kit, extends HDMI up to 330 feet (100 Meters) over a single CAT5e or CAT6 cable. The extender supports Ultra HD and Full HD resolutions (4K / 1080p) with support for 3D and the accompanying 7.1 digital audio. For added versatility the transmitter and receiver can be used to transmit IR and RS232 serial communication over the same cable. The versatility of this video extender makes it an ideal solution for digital signage applications.

What is HDBaseT?

HDBaseT is a standardized, zero latency, video distribution technology that's revolutionizing HDMI distribution. HDBaseT uses an advanced method of modulation that enables you to distribute uncompressed HDMI audio and video along with additional signals such as 100BaseT Ethernet, IR, RS-232 serial and power over cable.

Extend More with HDBaseT

The extender offers HDBaseT technology with HDMI, IR, and RS232 control in a single CAT 5 extender kit, for complete end-to-end control. Offering greater versatility than traditional HDMI extenders or HDMI cabling alone HDBaseT is the clear choice for every integrator and system designer.  The IR extension enables you operate your display and an IR-enabled source device, such as a Blu-ray player or TV Set top box, from either end of your extension. While RS232 control let you to connect a serial I/O device at your display - an ideal solution for adding a serial touch screen interface to your remote display.

Astonishing Picture Quality from an Impressive Distance

With the A/V industry quickly adopting 4K as the new high-resolution video standard, long range video distribution can be a challenge with standard HDMI cables beginning signal degradation at 30 feet.

With support for 4K you'll be amazed at how HDBaseT maintains your Ultra HD picture quality, four times the resolution of high-definition 1080p, even at 330 feet away from your video source. Plus, because the extender is still backward compatible with High-Definition 1080p displays and video sources, you can rest assured this extender will make your video source look great in any remote digital signage application.

Simplify Your Setup

This extender has been specially crafted for a smooth, tidy installation. HDBaseT technology allows for single cable installation, for seamless integration using existing CAT5e or CAT6 infrastructure, avoiding the hassle of running multiple cables, while reducing potential failure points. Mounting hardware is also built-in to both the extender and receiver for discrete, professional mounting. 

The ST121UTPHD2 is backed by a 2-year warranty and free lifetime technical support.


  • Integrated bi-directional RS232 and IR interfaces enable you to communicate with, monitor and control your source audio-video device, from either end of the connection
  • Support for 4K and full 1080p resolution with accompanying digital audio, which lets you display your content the way it s meant to be seen and heard


  • With HDBaseT extend HDMI, IR, and RS-232 through one CAT5e or CAT6 cable
  • Astonishing picture quality with support for resolutions up to UltraHD 4K
  • Hassle-free installation with a single CAT5e or CAT6 cable and built-in mounting hardware
  • 100m (330ft) maximum Cat5e or CAT6 cable distance
  • Supports bi-directional RS232 and IR extension
  • Dolby TrueHD, DTS-HD MA Audio
  • RS232 interface supports up to 115200bps full-duplex data rate
  • No software or drivers required


Local Unit Connectors: DB-9 (9 pin, D-Sub) Female

HDMI (19 pin) Female

IrDA (Infrared, SIR/FIR)

RJ-45 Female

Remote Unit Connectors: DB-9 (9 pin, D-Sub) Male

HDMI (19 pin) Female

IrDA (Infrared, SIR/FIR)

RJ-45 Female

Operating Temperature: 0°C to 70°C (32°F to 158°F)

Storage Temperature: -20°C to 85°C (-4°F to 185°F)

Humidity: 0-95%

Ports: 1

Cabling: Cat 5 UTP or better

Audio: Yes

Industry Standards: High Speed HDMI and HDCP compliant

Daisy-Chain: No

LED Indicators: HDCP (Green)

Mode (Green)

Power (Green)

RJ45 Link (Green)

Shipping (Package) Weight: 1500 g [52.9 oz]

Maximum Data Transfer Rate: HDMI - 3.4Gbps

Max Distance: 100 m / 330 ft

Maximum Digital Resolutions: 4K

Supported Resolutions: 3840x2160 (4K)

Wide Screen Supported: Yes

Audio Specifications: Supports Dolby TrueHD, DTS-HD MA

IR Interface: IR Interface: Bi-directional

Color: Black

Enclosure Type: Steel

Product Length: 150 mm [5.9 in]

Product Width: 80 mm [3.1 in]

Product Height: 25 mm [1 in]

Product Weight: 305 g [10.8 oz]

Power Source: 2 AC Adapters Included

Input Voltage: 110V-240V AC

Input Current: 0.6

Output Voltage: 12 DC

Output Current: 1.24A

Center Tip Polarity: Positive

Plug Type: M

Power Consumption (In Watts): 12

OS Compatibility: OS Independent

System and Cable Requirements: 1X Standard CAT5 cable

Included in Package: Local HDMI Extender Unit

Remote HDMI Receiver Unit

IR Receiver Cable

IR Transmitter Cable

HDMI Cable - 4 ft (1.2 Meters)

Universal Power Adapter NA / UK / EU

User Manual


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