Our History

With our corporate philosophy, and thanks to our dedicated employees, we are at the forefront of setting trends in the segment and are one of the fastest growing suppliers of electronic locking systems in Germany.


To the Company Brochure




Uhlmann & Zacher is one of the fastest growing suppliers of electronic locking systems in Germany. More than 120 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 1 Million electronic locking units „made by Uhlmann & Zacher“ have already been reliably installed.


In 2023, Uhlmann & Zacher installed a photovoltaic system at its headquarters in Waldbuettelbrunn. This is another measure to further advance our sustainable commitment. By feeding in self-generated, renewable energy, we want to further reduce our CO2 emissions in the future.


Expansion of the Clex prime locking system, the flexible locking system for medium and large buildings with Clex prime mobile. This enables door opening via smartphone.


Sale of the 1 millionth electronic locking unit in November. The first mobile access solution Clex private mobile is launched and enables door opening via smartphone.


Uhlmann & Zacher is launching its first own app: the keyng smartphone app. This is available for both iOS and Android.


The app is ideal for locking system management of smaller to medium-sized objects such as doctor's offices, law firms, smaller office units or private homes.


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.


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.



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 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.


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.


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


The number of employees crosses 50.


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


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.


The OEM business expands further.


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 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.


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.


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


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


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


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


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.


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.

Current information