What is the Kramer EXT3-H-POE-R HDBaseT 3.0 receiver?
The Kramer EXT3-H-POE-R is a long-reach HDBaseT 3.0 receiver that converts an incoming HDBaseT signal back to 4K@60Hz or 5K@30Hz 4:4:4 HDR HDMI, with bidirectional RS-232 and IR for display control. It covers up to 40m (130ft) at 4K60 or 5K30 and up to 70m (230ft) at 4K30 or 1080p. With symmetrical PoE, the receiver can power, or be powered by, the far end of the link, which simplifies display-side installs where an outlet is not convenient.

How does the Kramer EXT3-H-POE-R work?
The receiver accepts HDBaseT 3.0 over CAT cable and outputs HDMI plus RS-232 and IR control signals. Video arrives uncompressed with near-zero latency at up to 18Gbps, with HDR10, HDCP 2.3, deep color, lossless audio formats, EDID and CEC passed between source and display.
It is a standard HDBaseT extender, backward compatible with other standard HDBT transmitters and with Kramer matrix switchers and switchers that have HDBaseT 3.0 outputs, so it can serve as the display-end unit in larger routed systems.
RS-232 runs both ways at up to 115200 baud without pre-configuration, letting a control system manage a projector or display from the rack. LED status indicators and local firmware upgrades over RS-232 simplify service. The fanless DigiTOOLS enclosure mounts behind a display, above a dropped ceiling or three across in 1U with the recommended rack adapter.

What are the key features of the Kramer EXT3-H-POE-R?
- 4K60 and 5K30 4:4:4 HDR output — Uncompressed video at up to 40m.
- Up to 70m at 4K30 or 1080p — Covers longer runs at lower resolutions.
- Symmetrical PoE — Powers or is powered by the transmitter over the same cable.
- Standard HDBaseT receiver — Backward compatible with other standard HDBT extenders.
- HDCP 2.3, HDR10, EDID and CEC — Passes protected content and display control.
- 32-channel audio — Uncompressed multichannel audio for surround systems.
- Bidirectional RS-232 and IR — Controls the display or projector from the rack.
- Fanless DigiTOOLS enclosure — Silent operation near displays and in ceilings.
Where is the Kramer EXT3-H-POE-R typically used?
- Conference room
- Boardroom
- Auditorium
- House of worship
- Training room
- Government space
Technical Specifications
| Input | HDBaseT 3.0 |
| Output | 1 HDMI |
| Control ports | 1 RS-232 (3-pin terminal block), 1 IR (3.5mm) |
| Reach | 40m (130ft) at 4K60/5K30 4:4:4; 70m (230ft) at 4K30 4:4:4 or 1080p |
| Max data rate | 18Gbps (6Gbps per graphic channel) |
| Compliance | HDCP 2.3, HDR10, HDMI 2.0b |
| RS-232 | 300 to 115200 baud |
| IR | 20kHz to 100kHz |
| Power | 48V DC, 330mA; PoE from either end |
| Enclosure | DigiTOOLS, aluminum, convection cooled |
| Regulatory | CE, UL; RoHS, WEEE |
| Dimensions | 12.00 x 7.15 x 2.44cm (4.72 x 2.81 x 0.96in) W, D, H |
| Weight | 0.3kg (0.6lbs) approx. |
| Included | Power adapter, power cord, bracket set |
Frequently Asked Questions
Which transmitter pairs with the EXT3-H-POE-R?
Its matching transmitter is the EXT3-H-POE-T. As a standard HDBaseT receiver it also works with other standard HDBT transmitters and Kramer switchers with HDBaseT 3.0 outputs, such as HDBaseT-equipped matrix switchers like the Kramer VS-62DT (HDBaseT, check reach and resolution for the pairing).
Can the receiver power the transmitter?
Yes. Symmetrical PoE allows either end to supply power over the extension cable.
How far will it reach at 4K60?
Up to 40m (130ft) at 4K60 or 5K30 4:4:4, and up to 70m (230ft) at 4K30 4:4:4 or 1080p with Kramer recommended cables.
Can I control the display through it?
Yes. Bidirectional RS-232 and IR extend control from a room controller to the display or projector.
How do I rack mount it?
Three units fit in 1U with the Kramer RK-3T-B rack adapter. For longer 4K runs, compare the Kramer TP-583RXR extended-reach receiver.
Does Creation Networks install and support Kramer extenders?
Yes. We design, install and support complete AV systems nationwide. Browse the Kramer collection or contact us for a quote.
At Creation Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
Nationwide Audiovisual Services, Design, Installation & Support
Creation Networks is a trusted nationwide partner for complete audiovisual solutions — delivering expert AV system sales, professional design, programming, installation, and ongoing support to organizations across the United States.
From Microsoft Teams Rooms and enterprise video conferencing to LED video walls, live streaming production, and hybrid collaboration systems, we provide end-to-end AV integration using premium, certified technology from industry leaders including Crestron, Q-SYS, Shure, Extron, and Absen.
Whether you operate a single location or manage facilities nationwide, Creation Networks ensures your AV systems are designed for reliability, scalability, security, and long-term performance — helping your organization communicate more effectively and operate at peak efficiency.
CREATION NETWORKS — A PARTNER YOU CAN TRUST SINCE 2006























