Skip to content
Order before 3pm, Monday to Friday, for next-working-day dispatch on in-stock items*
Courier networks run at peak load in December. We will always try to dispatch same day.
We appreciate your business throughout the year.
Availability:
15 in stock
Save £57.94 Save £57.94

£99.75 (Excl. VAT)

Current price - £119.70 (Inc. VAT)
£99.75 - £99.75
Current price- - £119.70
Availability:
15 in stock
  • Visa
  • Mastercard
  • American Express
  • Apple Pay
  • Google Pay
  • Paypal
  • Shop Pay
  • Klarna
  • Bank Transfer (BACS)
Trade pricing for verified resellers, proforma issued on official company letterhead for PO processing.
Education & Public Sector Pricing available for schools, universities, NHS, and government organisations. Contact our Public Sector Team on 020 8191 9223 or email info@screenmoove.com.
  • Description
  • Specifications
  • Downloads
  • StarTech ST121HD20V HDMI over CAT6 Extender Kit - 4K 60Hz

    This HDMI over CAT6 extender lets you transmit your 4K 60Hz signal up to 165 ft. (50 m) over a single CAT6 cable, with the added benefit of a local HDMI output. The extender supports High Dynamic Range (HDR), providing high contrast images with enhanced video.


    Astonishing 4K Picture Quality

    This HDMI Ethernet extender supports a 4K 60Hz (3840 x 2160) resolution, providing four times the picture quality of high-definition (1080p). The extender supports HDMI 2.0 capabilities, offering 4:4:4 chroma subsampling. This ensures a crystal-clear picture that's ideal for delivering video content. With HDR support, you can enjoy increased contrast, color brightness and greater luminosity in your images.

    Long-Distance Transmission
    Extend an HDMI signal to up to 165 ft. (50 m) with the HDMI to CAT6 converter. Use your existing CAT6 cable infrastructure with a direct connection to the converter for an easy run through walls and ceilings, saving you on installation costs.

    Compatible with HDCP 2.2 Devices
    Connect your HDMI 2.0 devices and displays with confidence, knowing this extender is HDCP 2.2 compliant. This lets you harness the capabilities of HDMI-enabled devices such as Blu-ray players or online streaming devices in higher resolutions. It is also backward compatible with previous generations of HDMI and HDCP.

    ST121HD20V is backed by 2-year StarTech.com warranty with free lifetime technical support.


    Applications

    Extend your HDMI signal in classrooms and boardrooms
    Use existing CAT6 infrastructure to create digital signage
    Distribute an HDMI signal to multiple displays at tradeshows
    Extend your HDMI signals to locations that lack power outlets

  • Category Specification
    Warranty 2 Years
    Connectors Connector A: 2 - HDMI (19 pin), 1 - RJ-45
    Connector B: 1 - RJ-45, 1 - HDMI (19 pin)
    Operating Temperature 0°C to 40°C (32°F to 104°F)
    Storage Temperature -20°C to 60°C (4°F to 140°F)
    Humidity 0% - 80 % RH (non-condensing)
    AV Input HDMI
    AV Output HDMI
    Cabling Cat 6 UTP
    Audio Yes
    Package Height 7.2 cm [2.8 in]
    Package Length 22.6 cm [8.9 in]
    Shipping Weight 0.8 kg [1.8 lb]
    Package Width 13.4 cm [5.3 in]
    Package Quantity 1
    Maximum Cable Length 50.3 m [165.0 ft]
    Max Distance 50m [164ft]
    Maximum Digital Resolutions 3840 x 2160 (4K) @ 60 Hz
    Supported Resolutions Transmitter: 480i60, 576i50, 480p60, 576p50, 720p24/25/30/50/60, 1080i50/60, 1080p24/25/30/50/60, 2K24/25/30/50/60, 4K24/25/30, 4K50/60 4:2:0, 4K50/60 4:4:4;
    Receiver: 480i60, 576i50, 480p60, 576p50, 720p24/25/30/50/60, 1080i50/60, 1080p24/25/30/50/60, 4K24/25/30, 4K50/60 4:2:0, 4K50/60 4:4:4
    Wide Screen Supported Yes
    Product Height 1.3 cm [0.5 in]
    Product Length 97.0 mm [3.8 in]
    Weight of Product 156.0 g [5.5 oz]
    Product Width 7.0 cm [2.8 in]
    Color Black
    Power Source AC Adapter Included
    Input Voltage 100 - 240 AC
    Input Current 0.3A
    Output Voltage 12V DC
    Output Current 1A
    Center Tip Polarity Positive
    Plug Type M
    Included in Package 1 - HDMI over CAT6 Transmitter
    1 - HDMI over CAT6 Receiver
    1 - IR Blaster
    1 - IR Receiver
    2 - Universal Power Adapter (NA/JP, EU, UK, ANZ)
    1 - Quick-Start Guide
  • Description Downloads
    Datasheet Downloads
    Manuals Downloads
StarTech ST121HD20V HDMI over CAT6 Extender Kit - 4K 60Hz
StarTech ST121HD20V HDMI over CAT6 Extender Kit - 4K 60Hz
SKU: ST121HD20V
🚚 Order before 3PM, get it by tomorrow.
StarTech ST121HD20V HDMI over CAT6 Extender Kit - 4K 60Hz
SKU: ST121HD20V
🚚 Order before 3PM, get it by tomorrow.

Book a Free Product Demo

Remote or on-site. No obligation.

Integrator or Installer?

Trade pricing, volume discounts, same-day collection.

Request a Trade Account

Education & Public Sector Solutions

Exclusive pricing, flexible terms, and dedicated support for schools, universities, NHS, and government organisations.

Official Purchase Orders We accept formal POs with VAT-compliant invoicing for all verified institutions.
Contract & Volume Discounts Competitive rates for multi-site, long-term, or framework-based deployments.
Dedicated Account Management Single point of contact for lead times, coordination, and sourcing.
Flexible 30-Day Terms Available to verified schools, councils, and government bodies.
Next-Day Delivery

Same-day shipping

Trade Account

Trade account available

Trusted Customers

See Our Latest Reviews

Public Sector Friendly

We Accept Purchase Orders

Have more questions ? Talk to our experts...

Need help choosing the right product?

Need help choosing the right product?

Speak directly with a dedicated Screen Moove expert and get the right solution, first time.

Call us on: 020 8191 9223
Email us: info@screenmoove.com

Contact us

Simply complete our contact form, and we will promptly respond to your inquiries.

If you have any questions or enquiry, please fill out the form below with all of your details and we'll get back to you shortly.