I have total 28 packs, comes 2 in a pack. Never used.

This video balun is a must-have for anyone looking to enhance their video surveillance system. With 28 pairs and a single channel passive video transceiver, it is perfect for transmitting video signals over long distances without sacrificing quality. The connector A is a coaxial DC power female (2.1 mm), which makes it easy to install and use.

Designed for consumer electronics, this video balun is ideal for those who want to improve the security of their home or office. The product is compatible with various surveillance cameras, making it a versatile option for any setup. With its high-quality construction and reliable performance, this video balun is a great investment for any security-conscious individual.