Kramer EXT3-H-T 4K60 4:4:4 HDR HDMI Transmitter with RS–232 & IR Over Long–Reach HDBaseT
SKU
EXT3-H-T
Model No
50-80603090
$376.00
Product Highlights
- HDBaseT 3.0 transmitter
- Up to 40m (130ft) at 4K@60Hz (4:4:4)
- Up to 70m (230ft) at up to 4K@30Hz (4:4:4) or 1080P
- Bidirectional RS–232 & IR control extension

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Kramer EXT3−H−T is a high−performance HDBaseT 3.0 transmitter designed to extend 4K60 4:4:4 HDR HDMI, RS−232, and IR signals over twisted pair cables. It converts HDMI signals for output through HDBaseT and control ports, allowing video extensions up to 40m (130ft) over Kramer copper CAT cables while maintaining optimal video resolutions. This device is fully compatible with standard HDBaseT extenders, ensuring versatile connectivity for your audio-visual needs.
Kramer EXT3−H−T Key Benefits
- High Performance Standard Extender: Professionally transmits uncompressed video signals over twisted-pair copper infrastructures with near-zero latency.
- Future-proof, Standard Extender: Backwards compatible with other standard HDBaseT extenders, ensuring uncompressed HDBaseT signal extension.
- HDMI Signal Extension: Supports HDR, HDCP 2.3, deep color, x.v.Color™, and audio formats like Dolby TrueHD and DTS–HD for a high-quality audiovisual experience.
- Multi-channel Audio Extension: Allows for 32 channels of uncompressed digital stereo signals, providing studio-grade surround sound capabilities.
- Bidirectional RS–232 Extension: Facilitates two-way data transmission and device control, with high baud rates of up to 115200 bps.
- Bidirectional Infrared Extension: Enables remote control of devices at both ends of the line, enhancing user convenience.
- Cost–Effective Maintenance: Equipped with status LED indicators for easy troubleshooting and local firmware upgrades through RS–232, ensuring reliable performance.
- Easy Installation: Compact design allowing for fan-less use, suitable for dropped-ceiling mounts or side-by-side rack mounting with up to three units.
Kramer EXT3−H−T Detailed Specifications
| Signal Type | HDBaseT 3.0, HDMI |
| Video Resolution | 4K@60Hz (4:4:4) |
| Max Distance | 40m (130ft) over Kramer copper CAT cable |
| Audio Support | Up to 32 channels of uncompressed audio with Dolby TrueHD and DTS–HD |
| Control Interfaces | Bidirectional RS–232 and IR |
| Compatibility | Standard HDBaseT extenders |
| Installation Options | Dropping ceiling mount or 1U rack space |
| Firmware Upgrade | Local via RS–232 connection |
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