HDMI over CAT5 Extender with IR and Serial - HDBaseT Extender - HDMI over CAT6 - 4K

$379.24
$355.60 SAVE $23.64
9 availableas of 08/28/2026

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Compliance, certifications and origin

  • TAA compliant
  • RoHS
  • WEEE
  • REACH
  • Origin: Taiwan
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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

About the HDMI over CAT5 Extender with IR and Serial - HDBaseT Extender - HDMI over CAT6 - 4K

This HDBaseT™ extender kit can transmit your 4K HDMI signal up to 115 ft. (35 m) over a single CAT5e or CAT6 cable. At lower resolutions up to 1080p, the extender kit can transmit your signal up to 230 ft. (70 m).

Extend video and more with HDBaseT

The extender offers a complete end-to-end video and control solution, using HDBaseT technology to extend not just HDMI, but also DC power, IR and serial controlover a single CAT5 cable. By extending so much over just one CAT5e or CAT6 cable,HDBaseT is the clear choice of every integrator and system designer.

The added benefit of power over cable means that you'll only need one power source at one side of your extension -great for extending video and control to areas where power outlets may be limited, such as industrial sites.

Serial and IR extensionoptimizes operation by enablingyou to controlthe video source or display from both the local and remotelocation.

Maximizereliability with HDBaseT certification

This HDBaseT extender has beencertified via theHDBaseT Certification Program. This certificationensures theextender is compliant with HDBaseT technical standards, and maximizes reliability with your HDMI display and video source, by ensuring compliancewith their established HDMI ecosystem.

Astonishing 4K picture quality at an impressive distance

With the A/V industryadopting4K as the new high-resolution video standard,long-range video distribution can be a challenge overstandard HDMI cables that becomesusceptible to signal degradation at 30 feet. This HDBaseT extender can maintainyour Ultra HD 4K picture quality - four times the resolution of high-definition 1080p - even at 330 feet away from your video source. Plus, because the extender supports high-definition 1080p and lower resolutions, you can comfortably use this extender to make any video source lookgreat,while future-proofing your setup for 4K implementation.

Professional installation

HDBaseT technology offers a single-cable installation, so you can integrate this solution seamlessly using your existing CAT5e or CAT6 infrastructure. Both the transmitter and receiverincluded with thisHDBaseT extender kit aremountable, so you can keep the equipment out of sight in an equipment rack, or on a wall. This helps to reduce clutter and ensure a professional installation that doesn't draw your viewers' attention away from the content on your display. It's perfect for customer-facing displays in bars,restaurants or hotel lobbies.

What is HDBaseT

HDBaseT is a standardized, zero-latency video 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, over a single Ethernet cable.

Offering greater versatility than traditional HDMI extenders, and longer distances than HDMI cables alone, HDBaseT is the clear choice for every integrator and system designer. It can do so much, with just a single cable.

The ST121HDBTL is TAA compliant and backed by a 2-year StarTech.com warranty with free lifetime technical support.

Note:When using Power over Cable (PoC) to power the transmitter or receiver, it is not recommended to pair the StarTech.com transmitter or receiver with any other HDBaseT hardware. Power over Cable should only be used with the transmitter and receiver that are provided with this extender kit. This HDBaseT™ extender kit can transmit your 4K HDMI signal up to 115 ft. (35 m) over a single CAT5e or CAT6 cable. At lower resolutions up to 1080p, the extender kit can transmit your signal up to 230 ft. (70 m). Extend video and more with HDBaseT The extender offers a complete end-to-end video and control solution, using HDBaseT technology to extend not just HDMI, but also DC power, IR and serial controlover a single CAT5 cable. By extending so much over just one CAT5e or CAT6 cable,HDBaseT is the clear choice of every integrator and system designer. The added benefit of power over cable means that you'll only need one power source at one side of your extension -great for extending video and control to areas where power outlets may be limited, such as industrial sites. Serial and IR extensionoptimizes operation by enablingyou to controlthe video source or display from both the local and remotelocation. Maximizereliability with HDBaseT certification This HDBaseT extender has beencertified via theHDBaseT Certification Program. This certificationensures theextender is compliant with HDBaseT technical standards, and maximizes reliability with your HDMI display and video source, by ensuring compliancewith their established HDMI ecosystem. Astonishing 4K picture quality at an impressive distance With the A/V industryadopting4K as the new high-resolution video standard,long-range video distribution can be a challenge overstandard HDMI cables that becomesusceptible to signal degradation at 30 feet. This HDBaseT extender can maintainyour Ultra HD 4K picture quality - four times the resolution of high-definition 1080p - even at 330 feet away from your video source. Plus, because the extender supports high-definition 1080p and lower resolutions, you can comfortably use this extender to make any video source lookgreat,while future-proofing your setup for 4K implementation. Professional installation HDBaseT technology offers a single-cable installation, so you can integrate this solution seamlessly using your existing CAT5e or CAT6 infrastructure. Both the transmitter and receiverincluded with thisHDBaseT extender kit aremountable, so you can keep the equipment out of sight in an equipment rack, or on a wall. This helps to reduce clutter and ensure a professional installation that doesn't draw your viewers' attention away from the content on your display. It's perfect for customer-facing displays in bars,restaurants or hotel lobbies. What is HDBaseT HDBaseT is a standardized, zero-latency video 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, over a single Ethernet cable. Offering greater versatility than traditional HDMI extenders, and longer distances than HDMI cables alone, HDBaseT is the clear choice for every integrator and system designer. It can do so much, with just a single cable. The ST121HDBTL is TAA compliant and backed by a 2-year StarTech.com warranty with free lifetime technical support. Note:When using Power over Cable (PoC) to power the transmitter or receiver, it is not recommended to pair the StarTech.com transmitter or receiver with any other HDBaseT hardware. Power over Cable should only be used with the transmitter and receiver that are provided with this extender kit.

This HDBaseT™ extender kit can transmit your 4K HDMI signal up to 115 ft. (35 m) over a single CAT5e or CAT6 cable. At lower resolutions up to 1080p, the extender kit can transmit your signal up to 230 ft. (70 m).

Extend video and more with HDBaseT

The extender offers a complete end-to-end video and control solution, using HDBaseT technology to extend not just HDMI, but also DC power, IR and serial controlover a single CAT5 cable. By extending so much over just one CAT5e or CAT6 cable,HDBaseT is the clear choice of every integrator and system designer.

The added benefit of power over cable means that you'll only need one power source at one side of your extension -great for extending video and control to areas where power outlets may be limited, such as industrial sites.

Serial and IR extensionoptimizes operation by enablingyou to controlthe video source or display from both the local and remotelocation.

Maximizereliability with HDBaseT certification

This HDBaseT extender has beencertified via theHDBaseT Certification Program. This certificationensures theextender is compliant with HDBaseT technical standards, and maximizes reliability with your HDMI display and video source, by ensuring compliancewith their established HDMI ecosystem.

Astonishing 4K picture quality at an impressive distance

With the A/V industryadopting4K as the new high-resolution video standard,long-range video distribution can be a challenge overstandard HDMI cables that becomesusceptible to signal degradation at 30 feet. This HDBaseT extender can maintainyour Ultra HD 4K picture quality - four times the resolution of high-definition 1080p - even at 330 feet away from your video source. Plus, because the extender supports high-definition 1080p and lower resolutions, you can comfortably use this extender to make any video source lookgreat,while future-proofing your setup for 4K implementation.

Professional installation

HDBaseT technology offers a single-cable installation, so you can integrate this solution seamlessly using your existing CAT5e or CAT6 infrastructure. Both the transmitter and receiverincluded with thisHDBaseT extender kit aremountable, so you can keep the equipment out of sight in an equipment rack, or on a wall. This helps to reduce clutter and ensure a professional installation that doesn't draw your viewers' attention away from the content on your display. It's perfect for customer-facing displays in bars,restaurants or hotel lobbies.

What is HDBaseT

HDBaseT is a standardized, zero-latency video 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, over a single Ethernet cable.

Offering greater versatility than traditional HDMI extenders, and longer distances than HDMI cables alone, HDBaseT is the clear choice for every integrator and system designer. It can do so much, with just a single cable.

The ST121HDBTL is TAA compliant and backed by a 2-year StarTech.com warranty with free lifetime technical support.

Note:When using Power over Cable (PoC) to power the transmitter or receiver, it is not recommended to pair the StarTech.com transmitter or receiver with any other HDBaseT hardware. Power over Cable should only be used with the transmitter and receiver that are provided with this extender kit.

More from the manufacturer

Technical specifications

Technical Specifications of the HDMI over CAT5 Extender with IR and Serial - HDBaseT Extender - HDMI over CAT6 - 4K

General Information

General Information specifications
Manufacturer StarTech.com
Manufacturer Part Number ST121HDBTL
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Name HDMI over CAT5 Extender with IR and Serial - HDBaseT Extender - 4K
Packaged Quantity 1 Kit
Product Type Video Extender Transmitter/Receiver

Technical Information

Technical Information specifications
Connectivity Technology Wired
Number of Input Devices Supported 1
Number of Output Devices Supported 1
Maximum Operating Distance 328.08 ft

Video

Video specifications
Graphics Modes 4K
Maximum Video Resolution 3840 x 2160

Interfaces/Ports

Interfaces/Ports specifications
Network (RJ-45) Yes
HDMI In Yes
HDMI Out Yes
Serial Port Yes
Number of Network (RJ-45) Ports 2
Number of HDMI Inputs 1
Number of HDMI Outputs 1

Media & Performance

Media & Performance specifications
Media Type Supported Twisted Pair
Twisted Pair Cable Standard Category 6

Physical Characteristics

Physical Characteristics specifications
Color Family Black
Product Color Black
Transmitter Height 1.10"
Transmitter Width 2.60"
Transmitter Depth 3.60"
Receiver Height 1.10"
Receiver Width 2.60"
Receiver Depth 3.60"
Form Factor Rack-mountableDesktop
Transmitter Weight (Approximate) 15.94 oz
Receiver Weight (Approximate) 15.94 oz

Miscellaneous

Miscellaneous specifications
Package Contents
  • HDBaseT Transmitter
  • HDBaseT Receiver
  • Universal Power Adapter (NA, EU, UK, ANZ)
  • IR Receiver
  • IR Blaster
  • 5ft (1.5m) Cat5e Cable
  • Mounting Brackets
  • Foot Pads
Green Compliant Yes
Country of Origin Taiwan
TAA Compliant Yes
Environmental Compliance Restriction of Hazardous Substances (RoHS)Waste Electrical and Electronic Equipment Directive (WEEE)Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)

Warranty

Warranty specifications
Limited Warranty 2 Year

Ratings and reviews

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