Pioneer of Communication Technology and reliable Partner

Since its founding in 1926 by Wilhelm Sihn jr., WISI belongs to the global pioneers of receiving and distribution technology. The company deliberately pursues a close integration of research, product development, sales, project teams and on-site production.

In the field of high-quality components for the establishment and development of state-of-the-art TV cables and communication networks, WISI is the undisputed market leader and main supplier for the key cable network operators in all of Germany and exports to the major international markets. One of WISI's foremost principles is to be a permanent and reliable entity for customers, partners and employees.

WISI is committed to providing top-quality components, services and systems for communication and information and develop new sectors as the company pioneers into the future. To ensure its continued special position as a global competitor - shaping the technological development of the markets at the same time - WISI invests, for example, heavily in the areas of digital video conditioning and glass fiber technology all the way to the subscriber.