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

Audio balun

Lemar Industrial Corporation
Region: Taiwan
Update: 12/16/2008
Key Specifications
Our Audio balun (2 RCA to RJ45) is ideal to connect audio devices. It transmits stereo audio signals via Cat.5/6 UTP cable.

Bandwidth:

10Hz to 50KHz +/- 3dB

Impedance:

RCA 600ohm (Red/White-Video to RJ45 100ohm)

Connector:

RCAx2 (Right/red ---- Left/white )

Maximum distance:

2500feet (762m) via Cat6 UTP cable

Isolation:

500V

Nominal Level:

1.0 volts

Insertion Loss:

≦ 1dB

Common Mode Rejection:

Greater than 40dB

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