The Original Since 1974

When buying from KELLER, you get piezoresistive pressure measurement technology of the highest quality. These pressure sensors produced in Switzerland are the original, invented by our founder Hannes W. Keller more than 50 years ago. KELLER products bear the Swiss cross on the chest, the seagull in the heart and now the KELLER seal of quality on the packaging.

The new KELLER seal symbolises KELLER quality, it contains the most important values of the company and tells its story.

Find out more exciting details about the KELLER Quality Seal.