Our philosophy:

Always a reliable partner.

Since its founding in 1926 by Wilhelm Sihn jr., WISI has belonged to the global pioneers of reception 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, as well as to developing 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 heavily in the areas of digital video conditioning and glass fiber technology, all the way to the subscriber.

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       General consulting
       - info@wisi.de

       - sales@wisi.de

       Technical Expert
       - technicalexpert@wisi.de

       +49 7233 - 66 - 0