Wiesemann & Theis GmbH

Networking, sensors and interface technology for industry, office and IT

Wiesemann & Theis

What to know about us

W&T connects serial, Ethernet, USB, PCI and IO


  • The company Wiesemann & Theis was founded in 1979 in Wuppertal and currently employs 50 people.

  • Development

    We develop our own products. This enables us for example to expertly address any problems that may occur in terms of the interoperability that we strive for.

  • Production

    We not only develop our own products, we also manufacture them ourselves so that they are continuously monitored and improved. The results speak for themselves: more than 99.9% quality and reliability in 2023. Go to quality numbers

  • Sales

    A large inventory of finished and raw parts ensures that short delivery times are the rule even during the occasional semiconductor shortages.

  • Support

    We document product characteristics as clearly and completely as possible; and we answer your questions without delay. We also are concerned with extreme long-term availability of our products. In our 40-year history we have never had to phase out a single product.

  • Engineering Firms

    W&T works with a country-wide network of engineering firms. These firms work closely together with you to develop and implement on-site solutions for your problems.

    Please call us (+49 202/2680-0) - we will be happy to put you in contact with someone from your region.

    • W&T by the number

    • 35
      Representatives worldwide
    • 2.154.388
      IO and data points
    • 46.431
      Satisfied customers
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