Our History


The business idea of developing complete software solutions for the hotel industry is born in the owner-run hotel of the Uhlmann family. Uhlmann & Zacher GmbH is established by Martin Uhlmann and Dr. Marc Zacher.
In the following years, Uhlmann & Zacher provides systems for the hotel industry: from the management program and inventory management to POS software including PABX management.




Martin Uhlmann‘s father, Günter Uhlmann, invents the electronic cylinder. Uhlmann & Zacher develops software for simple locking systems. This segment becomes the second pillar for the upcoming company.



Carl H. Scheuermann joins the company and is since then responsible for development.



The German Patent DE19603320 is issued for the electronic locking cylinder with centrifugal engagement.



Uhlmann & Zacher shifts its activity exclusively to the development and manufacture of hardware, electronics and firmware for electronic locking systems.



During the first half of the year, all the departments move into the new building at Gutenbergstr. 2 – 4 in Waldbuettelbrunn.




Parallel to the OEM business, the proprietary brand Clex prime is launched and a Europe-wide network of specialist dealers is setup.
The knob module is being developed – for the first time in the world.



The new high security cylinder combines maximum mechanical safety with electronic flexibility. The electronic furniture lock is launched. It allows furniture such as medicine cabinets to be integrated into the electronic locking system.



The third strategic business segment of „Integrators“ emerges by creating open interfaces in the locking system software. Uhlmann & Zacher is one of the first providers of electronic offline solutions, who provide products with the latest technologies of MIFARE® DESFire®.



The OEM business expands further.



A „security network“ is created by introducing access points. Thus, diverse wireless networks can be designed.
Knob modules come with a default 3-segment LED light for better visualisation of the authorisation status. The intuitive application makes it friendlier to use.



ClexTouch software for tablet PCs is launched. Comprehensive software tools make facility management a lot easier.



The number of employees crosses 50.



More than 300,000 electronic locking units are already in use.




The French office of „Uhlmann & Zacher France S.A.S.“ is established in Emerainville near Paris.
The electronic door handle CX6172 is showcased to the public for the first time at Security in Essen.



The company celebrates its 25th anniversary. In the same year, a great innovation is also launched. The electronic door handle CX6172 goes into series production and wins several awards.



At the beginning of the year, the 500,000th electronic locking unit is sold, which is a milestone in the company‘s history. In summer, construction is started on an annex to the main building.



The annex doubles the total area of the company building in Waldbuettelbrunn. New offices, production space and a modern high-bay warehouse are established. The milestone of 100 employees is reached.



Uhlmann & Zacher is awarded the Innovation Prize of the SME Union of Lower Franconia. The prize is awarded to medium-sized companies that are active not only regionally, but internationally, and have distinguished themselves through their particularly forward-looking orientation and innovative strength.



Uhlmann & Zacher is one of the fastest growing suppliers of electronic locking systems in Germany. More than 100 employees contribute towards making true our claim of always being one step ahead of the market. Various patents and product launches speak for themselves. More than 800,000 electronic locking units „made by Uhlmann & Zacher“ have already been reliably installed.


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