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StarTech Ultra HD 4K HDMI over Cat 5e/6 HDBaseT Extender Kit (230')

BH #ST121HDBTE • MFR #ST121HDBTE
StarTech
StarTech Ultra HD 4K HDMI over Cat 5e/6 HDBaseT Extender Kit (230')
Key Features
  • 4K, 2K, 1080p, 3D HDMI Signal Extender
  • Transmit UHD 4K Video up to 115'
  • Transmit 1080p Video up to 230'
  • Power Both Units with 1 PSU using PoH
Transmit HDMI video up to 230' with this Ultra HD 4K HDMI over Cat 5e/6 HDBaseT Extender Kit from StarTech. The kit includes a transmitter and a receiver that feature HDMI input and output that is extended beyond the limited distance of HDMI. The system can transmit video to up to 230' when transmitting 1080p60 video and up to 115' when transmitting 4K30 video over Cat 5e or Cat 6 cable. Applications include trade show demos, video walls, displays in large conference rooms, and areas where connectivity and power supplies are limited.
Temporarily Out of Stock
$234.95
$40/mo. suggested payments for 6 Mos.
with the credit card.§ 
or Save the Tax with the credit card. 
Transmission Distance
230'
330'

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StarTech ST121 Overview

Transmit HDMI video up to 230' with this Ultra HD 4K HDMI over Cat 5e/6 HDBaseT Extender Kit from StarTech. The kit includes a transmitter and a receiver that feature HDMI input and output that is extended beyond the limited distance of HDMI. The system can transmit video to up to 230' when transmitting 1080p60 video and up to 115' when transmitting 4K30 video over Cat 5e or Cat 6 cable. Applications include trade show demos, video walls, displays in large conference rooms, and areas where connectivity and power supplies are limited.

The units utilize HDBaseT connectivity that can transmit video and serial communication over a single cable. Embedded audio transmission up to 7.1 surround sound is supported. It also features Power-over-HDBaseT (PoH) capability, which lets you power both units with only one power supply connected to either unit to also limit cabling.

Key Features

HDMI input and RJ45 output on transmitter, RJ45 input and HDMI output on receiver
Transmit UHD 4K30 video up to 115'
Transmit 1080p60 video up to 230'
Utilizes Power-over-HDBaseT; one power supply included
Uses single Cat 5e/6 cable for transmission, sold separately
Supports up to 7.1-channel surround sound
UPC: 065030851107

StarTech ST121 Specs

Transmitter Interfaces
Input Connectors1 x HDMI Female
Embedded Audio InputHDMI
Output Connectors1 x RJ45 Female
Receiver Interfaces
Input Connectors1 x RJ45 Female
Output Connectors1 x HDMI Female
Embedded Audio OutputHDMI
Standards
HDCP SupportYes
EDID SupportYes
Transmission
Max Transmission DistanceUHD 4K at 30 Hz:
114.8' / 35 m (via Cat 5e/6)
1080p, 720p at 60 Hz:
230' / 70.1 m (via Cat 5e/6)
Video FormatHDMI
UHD 4K: 30 fps
1080p: 50/60 fps
DCI 2K
720p
Supported Cable TypesCat 5e/6
Power
Transmitter Power Connector1 x Barrel (12 VDC at 1.5 A) Output
PoE SupportPoH 802.3at
Transmitter Power ConsumptionPower Supply: 12 VDC at 1.5 A (7 W)
Receiver Power ConsumptionPower Supply: 12 VDC at 1.5 A (7 W)
Environmental
Operating Temperature32 to 104°F / 0 to 40°C
Storage Temperature14 to 140°F / -10 to 60°C
Operating Humidity0 to 80%
General
Transmitter Dimensions3.1 x 2.6 x 1" / 80 x 67 x 25 mm
Receiver Dimensions3.1 x 2.6 x 1" / 80 x 67 x 25 mm
Transmitter Weight15.1 oz / 428 g
Receiver Weight15.1 oz / 428 g
Packaging Info
Package Weight2.4 lb
Box Dimensions (LxWxH)9 x 6 x 2.39"

StarTech ST121 Reviews

This Company is Phenomenal

By Kim
Rated 5 out of 5
Date: 2021-12-16

B&H was our choice when we replaced our video camera and peripherals in our worship center recently. Our experience in getting approved for and creating a tax exempt account via their website was a very efficient process as well. We are located in PA and they are in NY. We ordered via their website, in early December (!), and received the order within 2 days. The 7 pieces of electronic equipment were very well packed and arrived in perfect condition. Excellent service overall!

Nice Picture

By EdDyP123
Rated 5 out of 5
Date: 2017-09-29

I often like to show family members videos and pictures of our vacation and the kids from the computer on the TV. We also like to watch a lot of streamed content as well. My TV is not a smart TV so I can't stream content to it from my computer. I often have to copy everything to a USB stick and plug that into my TV. This eliminates that by being able to hook my computer from across the room to my TV as a monitor and watch media content on my TV from my computer without having to move it. Picture is clear without any degradation. The two units are small enough to tuck away out of sight. Did what I needed it to do. I received this product in exchange for an unbiased review.

Great product with affordable price

By djLuislatino
Rated 4 out of 5
Date: 2017-04-01

I got this adapter from Startech to test, and I'm using it now for about 2 months, and it is great. It responds very well and no freezing; it does the job, and I recommend it. Disclaimer : “I received this product in exchange for an unbiased review.”

HDMI over Ethernet

By Starr
Rated 5 out of 5
Date: 2017-03-07

We tested the device over 100’ of cable with great results. The picture quality appears to be flawless and the fact that it only requires power on one end is definitely plus. Highly recommended! The small converters on each end are easy to hide and it was a simple install.

HDMI over network cable that works!

By ScottG416
Rated 5 out of 5
Date: 2017-01-14

I was tasked with having users mirror their laptop on a tv (after the built was complete) without software and I have found the answer. A facility had just finished a renovation and the tv was mounted, power was installed and network drops were in place but no thought had gone into how to utilize the boardroom to its full potential. After much discussion with endusers and management the most cost effective way would be to use an HDMI extender without any software installation required (since most laptops are locked down these days). With cables plugged in (HDMI and CAT5/6) all is left for the user to do is to plug in HDMI to their laptop and we now have the laptop screen on the tv. Another great product from Startech.com. I received this product in exchange for an unbiased review.

Very solid product for the AV professional

By NickD
Rated 4 out of 5
Date: 2017-01-08

I have been using this product for a few weeks now to send HDMI signal over Ethernet and so far so good. I have used this with several devices and TVs/projectors with no problems. (Computer, Laptop, Tablet, Xbox 360, Xbox One S, Android boxes, Nintendo Classic, 1080p TV, 4k TV, 720p Projector, through surround sound Receivers, etc.) This package comes with everything except the HDMI cables (mounting brackets, grounding wires, screws, short Ethernet cable, power connectors with ends for different countries, etc.). The instructions provided are very simple and don’t offer much information other than the basics. For example, grounding wires were provided but it's not clear which applications they would be required for. This product worked well without the grounding wires connected. I suppose I would connect the grounding wires in a more demanding environment with a permanent installation. For now I like that they can easily be moved. The mounting brackets are universal and can be setup in several different ways allowing very flexible installation of the boxes. I like that you can apply power to either the receiver or the transmitter and it will power both ends (only one power supply is needed). The devices are made very solid with metal. They were shockingly heavy and seem very durable. I suspect these will be able to survive quite a few drops and bumps. After about 20 minutes of use, both the receiver and transmitter got very hot. I was nervous that I would not be able to touch them soon. After a few more hours of use they remained "very hot" but I could still pick them up and hold them if needed. The temperature worries me so I will keep and eye on them. My only wish is that it have an IR return option like similar products so the source device could be controlled from the receiver. The lack of IR return and the worrisome heat this device make are why I gave this a Good rating instead of Excellent rating. So far I am happy with this product and will continue to use it often. I received this product in exchange for an unbiased review.

Easy and Effective

By Christopher
Rated 5 out of 5
Date: 2021-03-11

The StarTech device worked great from the time we plugged it in. Since it only needs power at one end (and either end works), it was easy to install and is flexible. Liked it so much that we are replacing another extender of a different brand.

2 bad units.

By Reginald
Rated 1 out of 5
Date: 2020-05-10

I wanted to use the unit for DSM's, never got it to work. After the initial unit failed to work I spoke with Startech support. They shipped out a new unit, without asking for the first one back. The second unit hasn't worked either. I tried all different types of devices, but the unit never recognized any of the signals. I wouldn't trust the unit in a mission-critical scenario.

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If power over cable is not available, do the ...

If power over cable is not available, do the appropriate power supplies come with the package to power both boxes?
Asked by: Thomas
The ST121HDBTE includes one power adapter. you extend HDMI video and audio up to 230 feet (70 Meters) over a single Cat5 cable. For added versatility both the transmitter and receiver can be powered by the same single power source using Power Over Cable (POC).Atha, StarTech.com Support
Answered by: StarTech.com Support
Date published: 2020-09-17

Will this work with Cat6e?

Will this work with Cat6e?
Asked by: Jordan
Manufacturer states that 5e and 6 are supported. 6e is not included on their specs.
Answered by: Bruno
Date published: 2021-04-23
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