4K HDMI® Balun | Visually Lossless Compression | IR Support<br/><br/>This HDMI® over CAT6 extender lets you transmit your HDMI signal over a CAT6 cable up to 330 ft. (100 m) away. The extender supports Ultra HD 4K with support for 3D and the accompanying digital audio.<br/><br/>Long-Distance Transmission<br/><br/>Extend your HDMI signal to up to 330 ft. (100 m) with this HDMI over Ethernet extender. 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.<br/><br/>The extender also works to extend an infrared (IR) signal, enabling you to control your video source from the remote location.<br/><br/>Astonishing 4K Picture Quality<br/><br/>This HDMI Ethernet extender supports a 4K 60Hz (3840 x 2160) UHD resolution, providing four times the picture quality of high-definition (1080p), ensuring a crystal-clear picture that's ideal for displaying your 4K video content in office buildings, airports, retail settings and more.<br/><br/>Plus, because the extender supports 1080p and lower resolutions at up to 460 feet away, you can comfortably use this extender to make any video source look great.<br/><br/>Compatible with HDCP 2.2 Devices<br/><br/>Connect your HDMI 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.<br/><br/>ST121HD20L is backed by 2-year StarTech.com warranty with free lifetime technical support.
Technical specifications
Features
| Type | AV transmitter & receiver |
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| Maximum resolution | 3840 x 2160 pixels |
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| Cable types supported | Cat6 |
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| Maximum transfer distance | 140 m |
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| Chipset | Norelsys NS 5730, NS5731 |
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| Maximum refresh rate | 60 Hz |
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| Audio output channels | 7.1 channels |
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| LED indicators | Link, Power |
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| Supported graphics resolutions | 1280 x 720 (HD 720), 1920 x 1080 (HD 1080), 1920 x 1200 (WUXGA), 2560 x 1600 (WQXGA) |
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| HDCP | Yes |
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| Material | Metal |
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| HDCP version | 1.4/2.2 |
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| Product colour | Black |
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Ports & interfaces
| Connectivity technology | Wired |
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| RJ-45 input ports | 1 |
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| RJ-45 output ports | 1 |
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| HDMI in | 1 |
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| Number of HDMI outputs | 1 |
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| Serial ports quantity | 2 |
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| Remote (IR) input | 2 |
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| Remote (IR) output | 2 |
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| DC-in jack | Yes |
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Power
| AC input voltage | 110 - 240 V |
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| Operating voltage | 5 V |
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| Output current | 2 A |
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| External power adapter | Yes |
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| Power plug type | Type M |
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Operational conditions
| Operating temperature (T-T) | -5 - 40 °C |
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| Storage temperature (T-T) | -15 - 55 °C |
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| Operating relative humidity (H-H) | 0 - 95% |
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Weight & dimensions
| Width | 111 mm |
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| Depth | 76 mm |
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| Height | 26 mm |
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| Weight | 271 g |
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