DVI extender Renkforce 189872 — extends DVI signal up to 70 m over RJ45 cable

The Renkforce DVI extender model 189872 extends DVI video signals up to 70 metres using standard RJ45 cabling. It allows separation of the DVI source and display by converting the DVI connection to travel over inexpensive, widely available network cabling, making it practical to place a monitor, projector or KVM unit far from the video source without running long DVI cables.

Advantages

This extender uses RJ45 infrastructure to transmit DVI signals over extended distances while preserving video quality and simplifying cable management. Its design reduces the need for custom DVI runs, supports straightforward installation with widely available Cat5e/Cat6 cables, and is suitable for fixed installations where a clean, reliable signal path is required. The product is compatible with common DVI displays and sources and minimizes visual signal degradation at typical operating distances.

Suitable for

• Conference rooms where the source is distant from the projector or display
• Classrooms and lecture halls requiring remote display placement
• Control rooms and monitoring stations with centralized video sources
• Retail displays and digital signage setups using existing RJ45 cabling
• KVM applications where keyboard/video/mouse equipment is located separately

Key specifications

• Maximum transmission distance over RJ45 cable: up to 70 metres
• Signal type: single-link DVI video extension
• Cable type: standard Cat5e/Cat6 UTP/STP RJ45 network cable
• Connection method: DVI on source and display ends with RJ45 between units
• Typical supported resolution: suitable for common DVI resolutions at extended distances (performance depends on cable quality and environment)

How to use

Connect the DVI output of your source device to the transmitter unit and connect the display’s DVI input to the receiver unit. Use a single run of RJ45 network cable between the transmitter and receiver, ensuring proper termination and avoiding damaged or excessively long cable runs beyond the specified 70 metres. Power the units if separate power supplies are required and verify signal presence on the connected display. Adjust source display settings as needed to match the native resolution of the monitor or projector.

Recommendations

Use high-quality Cat5e or Cat6 cable with reliable terminations and avoid running the RJ45 cable alongside high-voltage power lines to reduce interference. For best results, measure and test the actual installation distance and resolution requirements before permanent installation. In environments with strong electromagnetic interference, choose shielded cable or improve grounding to maintain signal integrity.