KELLER AG für Druckmesstechnik was established in 1974 by Hannes W. Keller, the inventor of the integrated silicon measuring cell. Today, his sons Tobias and Michael Keller run the business. The company is wholly family-owned and employs 450 staff.
KELLER feels a strong connection to its home of Switzerland. Its headquarters are where the value is added and where most of our employees work. As a result, all KELLER products bear the quality seal ‘Made in Switzerland’ and embody the Swiss values of quality, functionality and reliability.
KELLER AG für Druckmesstechnik, including KELLER Gesellschaft für Druckmesstechnik mbH in Jestetten, is certified to ISO 9001. This means that our measured values can be fully traced to national standards.

At home anywhere in the world.
As a company that operates on an international scale, KELLER AG is represented at a number of locations around the globe. Because we are committed to offering the best service to our customers, you will always receive advice in your local language. KELLER has ten branches in Europe, Asia, South America and the USA. Various representatives and distributors also
support our branches in other countries. Piezoresistive pressure measurement technology made in Switzerland.
Every year, KELLER produces 1,2 million highgrade measuring cells which, in addition to being sold directly, can also be found in all of KELLER’s consumer products. Whether a standard or customised solution, quality is our principal focus. From start to finish, our value chain is created at our headquarters in Winterthur, where we do everything from producing the individual parts to calibrating the sensor and carrying out the final checks on the finished product.

Strong roots meet sustainable development

KELLER strives not just to meet individual customer requirements, but also to ensure that the company develops in a sustainable way.
This is underpinned by our commitment to promoting the independent development of our employees in both the personal and the professional realm. Added value – by people, for people
KELLER is committed to building a strong network and running a company that is operated by and for people. KELLER AG is more than just a financial backer – it creates sustainable added value. KELLER places a special focus on projects that give people an opportunity for development.

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