The Gefen EXT-DVI-EDIDN DVI Detective Repeater is a professional EDID management and signal repeater device designed to resolve compatibility and handshake issues in DVI-based AV systems. It is commonly used in broadcast facilities, control rooms, digital signage systems, medical imaging environments, and professional AV installations where consistent DVI signal negotiation between source devices and displays is critical. The device stores and emulates EDID (Extended Display Identification Data), allowing a source to detect a stable display profile even when the actual display is disconnected or powered off.

In addition to EDID emulation, the EXT-DVI-EDIDN also functions as a DVI signal repeater, helping maintain signal integrity over longer cable runs by re-clocking and regenerating the video signal. This makes it especially useful in complex AV infrastructures where long-distance cabling or signal distribution equipment is involved. Designed for permanent professional installations, the unit ensures reliable video output, prevents resolution dropouts, and reduces system troubleshooting caused by EDID mismatches.