https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
Active VGA balun

Active VGA balun

Lemar Industrial Corporation
Region: Taiwan
Update: 12/16/2008
Key Specifications
Our Active VGA balun are designed to connect a remote monitor or video-projector to a PC.

The Active VGA balun supports a local monitor and a remote monitor via Cat5 or better cabling. Each set includes one transmitter and one receiver.

This solution is really practical if you want to view on a local monitor a VGA signal and at the same time send the VGA signal to a remote VGA monitor or projector, eg in education or shop displays where the distances involved are greater.

These active VGA baluns work in conjunction with laptops, PCs, flat-screen LCD monitors and multimedia projectors.

Typical distance:

180m (591ft) with VGA resolution 640x480

150m (493ft) with SVGA resolution 800x600

130m (427ft) with XGA resolution 1024x768

100m (329ft) with SXGA resolution 1280x1028

80m (263ft) with UXGA resolution 1600x1200

70m (230ft) with resolution 1920x1440

https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions