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About us

Bihl+Wiedemann GmbH was founded in 1992 in Mannheim, Germany by Jochen Bihl and Bernhard Wiedemann. The highly specialized engineering firm is among the leading providers of safety technology and electronic components for automation technology using AS-Interface.

Leading with AS-Interface since 1995

In 1995 Bihl+Wiedemann was the first company to receive a certificate from AS-International for their ASi Master. The Master is now used as a reference for the certification for ASi slaves. Other milestones in the company's history include the introduction of the first ASi Master for specification 3.0, the release of the first ASi Master in a stainless steel housing with expanded diagnostic functions (2004), and the membership in AS-Interface's Safety Consortium (2005). Since then Bihl+Wiedemann is among the top names in the field of safety technology using ASi Safety at Work.

International subsidiaries and distributors

Additionally to the company's headquarters in Mannheim, Bihl+Wiedemann has subsidiaries in Turkey, Denmark, USA, and China. International sales partners ensure Bihl+Wiedemann's presence around the world.

Headquarters in Mannheim


By choosing products from Bihl+Wiedemann, you are in the company of many well-known users in factory, process, and building automation, as well as in the fields of machine building and transportation (ship, rail, road). The products from Bihl+Wiedemann are used for safety and non-safety applications in machines and systems of all sizes, including conveyor lines, high-rise racking system, packaging machines or machine tools.

Certified according to DIN EN ISO 9001

Assuring consistent quality has always been of utmost importance for Bihl+Wiedemann. The company is DIN EN ISO 9001 certified.

The current certificate can be viewed here (PDF)