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Over 50 Years of Security & Innovation

2017 marked the 50th anniversary of LINK as a company. This medium-sized company based in Butzbach can look back on an eventful and dynamic history. Founded in 1967 by Norbert Link, over five decades LINK has gone from a family-run company to the largest manufacturer of certified magnetic contacts in the German-speaking world.

At the end of the 1960s in Frankfurt a. M., Norbert Link began manufacturing industrial switches, winning prestigious companies as customers. He soon focused the company on the production of magnetic contacts for security technology. In 1980, LINK GmbH moved to larger production sites in Butzbach located 40 km from Frankfurt, bringing together the entire value-creation chain of consulting, development, design and production under one roof. The quality, flexibility and reliability of supply, which are the hallmarks of LINK, could then be guaranteed.

In addition, to this day LINK continues to pioneer the development of new and innovative security products. For example, back in 1979 LINK developed the first VdS class C magnetic switch. Further milestones in the development of LINK products include:

  • The first magnetic contact featuring combined monitoring of the open/closed status in accordance with VdS C
  • Vandal- and sabotage-proof door loop with VdS C
  • Water-proof alarm glass conductor-loop systems (AGV) for alarm glass in accordance with VdS C
  • Unveiling the first status detector programme in accordance with European standard EN 50131-2-6 (certified by an accredited testing institute)
  • The world's first status detector with maximum EN Grade 4 security level and VdS C (AMK 100 G4)


Responsible for these developments were Daniel and Markus Link, the company founder's two sons, who are now the second generation to run the business. "What counts are the demands and requirements of our customers. As a flexible and reliable technology partner, we stand for consistent quality and customer focus", explains Daniel Link. This is also apparent in the depth of its product range, with LINK offering special solutions and countless versions of a component for specialised applications and problem cases.
LINK also boasts above-average expertise in the field of standardisation and certification. Markus Link is Chairman and an active member of national (DKE) and international (Cenelec TC 79) standardisation committees, which work ceaselessly on market harmonisation and product conformity.

The tried-and-test LINK standard range comprises a wide range of magnetic contacts and cable glands, glass breakage sensors, LINK Glass Connect Conductor Systems (LGC) and distributors. In addition, LINK manufactures ODM products for German and international companies. Here too, the manufacture of these individual products is brought together under one roof, i.e. the entire product development and production process from initial idea through to finished product with certification.

Through an ongoing dialogue with planners, specialist companies and, in particular, manufacturers, LINK is keen to expand its market share based on decades of experience in the field of security and building automation. There are currently around 130 employees and trainees at the Butzbach site, and the number is growing. A central part of the LINK company philosophy is continuous progress and improvement in all areas, with the active involvement of its employees. For a successful future, LINK is investing in the areas of engineering and automation as well as participating at international trade fairs, in company development, and training.

Its products continue to be "Made in Germany" and are marketed and distributed throughout Europe. The positive development of the business in recent years confirms the success of a company which continues to rise to the challenges presented by ever-changing markets.

Corporate Brochure

Here you can download our corporate brochure in PDF file format.


Corporate Brochure LINK GmbH

Corporate Video

Here you can download our corporate video in WMV file format.


Corporate Video LINK GmbH (44 MB)

Quality is one of the main topics for LINK

We strictly apply ISO 9001 rules in all our processes. Furthermore in order to maintan our high quality level we check any product before it will be dispatched to our customers.

New products will not be launched before all components have been sucessfully tested and approved by our development department. We do apply electrical, physical, chemical and long-life test procedures as well as extreme situation simulation in order to provide sophisticated technical solutions.

We are member of a couple of sector organizations and assist in several technical working groups. Thus we help to promote the development of technical guide lines and norms.

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