Keller AG

Your Swiss Pressure Sensing Specialist

  • Europe’s leading manufacturer of isolated pressure transducers and transmitters
  • Pressure ranges from 5 mbar to 2000 bar
  • High volumes at low prices, great flexibility, highest accuracies
  • Production of more than one million pressure transducers and transmitters per year
  • KELLER is certified according to ISO 9001

The KELLER Values


We put a strong focus on our customers and their needs. Collaboration is key to meet individual application requirements and provide effective solutions. More than 70% of our sensors are custom products.


We believe in our technology and push the boundaries of what is possible in terms of precision and operating conditions. Piezoresistive pressure sensors are used in almost every thinkable environment and can reach accuracies beyond 0.01% full-scale.

Mutual Support

We emphasize a culture of open communication, honesty and mutual support. We are convinced that by conjoining the knowledge of different internal teams and by working closely together with our suppliers, distributors and customers we can all advance and prosper.


We are not afraid of taking a calculated risk if the circumstances are right. Many of our most innovative and successful products started out as a daring project. 


We are proud to be an independent Swiss family enterprise.

KELLER is not obligated to any bank or investor and our entire value creation takes place in Switzerland.