On 29 October 1969,ifm electronic gerte gmbh+co kg, the predecessor of the ifm Group, was formally established. In this year, the invention of 220V inductive sensor also marks the rising of the company's glorious history. The company was founded to differentiate and stand out in terms of quality, reliability and customer service. A few years before the company was founded, its two founders, Gerd Marhofer, a "salesman", and Robert Buck, an "electronics engineer", had already opened rolling mills and steel plants for Alsace's manufacturers. But they weren't content with that. Since 1967, Robert Buck has been making his own sensors and circuits in the bedroom of his apartment in Tettnang. based on Gerd Marhofer's idea, he designed an inductive sensor for 220V voltage. At the time, no company had mastered this contact-free detection technology, and Robert Buck was a great developer. "You even feel like he could make himself small and walk through the circuit." "Recalls Gerd Marhofer. Robert Buck said, "I want to use electronics to solve problems that no one else can." The invention of inductive proximity switch for 220V voltage which can directly trigger the contactor marks the birth of ifm electronic gerte gmbh+co kg. Initially, the Easman product group includes a variety of inductive sensors ranging from 10mm to 20mm.