Gräf & Meyer GmbH, Kirkel-Limbach, Germany, nov.1st 2020:

NEWS: Second generation of „ONE 500“ now available.
LDA ONE reinvents itself and becomes expandable

The system now offers up to 60 zones and a total output of up to 5000 W.

The ONE 500, the most compact and cost-effective public address and Voice Alarm System on the EN 54 market, continues to develop. It becomes ONE v2, a solution that can now be expanded thanks to a firmware update and the creation of a proprietary ring with standard UTP cabling (LOOP04 / LOOP10).

The entire scaled System-ONE, and thus each of the associated devices and their cascade function, corresponds to the EN 54-16 standard.

To set up a ONE v2 system with expansion, you only have to use a single expansion card per system and only add this to the master device to close the ring of UTP cabling.

In order to achieve maximum flexibility and adaptation to the needs of our national and international customers, this new functionality was made available as part of an extensive firmware update. This was developed by our research and development department in Spain. The new firmware of ONE v2 makes it possible to cascade several ONE500 devices via a proprietary UTP cable ring. This means that a total of up to 10 ONE devices can be connected together to form a 60-zone system with a total output of 5,000W.

With immediate effect, all ONE devices delivered use the v2 firmware and the expandable functionality.

ONE v2 is therefore the ideal system for installations with multiple zones and for installations with variable performance. This is the case with office buildings, schools, medical centers and hotels; a scalable and modular solution is required there, that does not renounce any advanced functionality in terms of security and reliability.

Kirkel, Germany – 14.05.2020

After an eventful year in which Gräf & Meyer GmbH celebrated its 25th anniversary and a promising cooperation with LDA AudioTech Spain was closed, the next logical step into an exciting future follows.

We have all had to bear a lot in the past few weeks, not only privately also in business, of which some businesses were facing very hard times or worse. Despite everything, we did not lose courage and confidence, as every crisis also brings new opportunities.

Following this motto, Gräf & Meyer GmbH started to look for a strong partner and found NSC Sicherheitstechnik GmbH – as what belongs together, grows together.

Gräf & Meyer GmbH, based in Kirkel - Germany, is specialized in development, production and distribution of voice alarm systems, emergency sound systems and public address systems, sold in Germany, Europe and beyond.

NSC Sicherheitstechnik GmbH, based in Bielefeld - Germany, is a specialist in the development, production and distribution of fire alarm system technology and professional video technology. NSC, founded in 2003, has approximately 70 employees. NSC currently has six independent offices in the Netherlands, Italy, Spain, Portugal, Greece and Dubai and in addition two sales offices in London and Moscow.

NSC and Gräf & Meyer have had a successful partnership for many years. Therefore, it is logical that this proven collaboration is elaborated into a corporate partnership.

As of July 1st, 2020, both the voice alarm systems as well as fire alarm systems will be offered out of one hand.

A total of 12 skilled sales representatives for the national market and in addition 6 sales offices for the international market, are at your disposal.

Our goal, together with LDA AudioTech and NSC Sicherheitstechnik, is to continue the successful road ahead and to supply both the European and partly the global market with the latest technologies and to present tailored solutions meeting our customers’ needs.

We look forward to a successful cooperation.

For more information please have a look at:

or better, give us a call at:

Gräf & Meyer GmbH + 49 (6841) 93493-0
NSC Sicherheitstechnik GmbH + 49 (521) 13629-0

Kirkel, Germany – 01.11.2019

2019 is an eventful year for Gräf & Meyer GmbH. We are looking back on 25 years in which we have successfully developed demand-driven voice alarm technology and combined it with powerful communication technology. We are proud of the fact that the brand Gräf & Meyer has become a renowned name in the market; one that stands for individual, high-quality technology at a competitive price-performance ratio.

Our customers can be found throughout Europe but also for example in Russia as well as in the United Arab Emirates, to name a few. One current major project, for example, is equipping a large number of all Greek airports.

After 25 meaningful years, 2019 stands for a generation change at Gräf & Meyer GmbH: we are very pleased to have Mr. Patric Landes (Administration and Sales) and Mr. Michael Ehrlich (Development and Technology) on board as new shareholders & Managing Directors and in addition, Mr. Ramon Zwaga (International Sales) as new shareholder as well.

With this realignment we have succeeded to establish a partnership agreement with LDA Audio Tech, being very successful in Southern Europe. LDA Audio Tech will enrich the Gräf & Meyer product range in the future with extremely interesting and above all very innovative products.

Together with LDA Audio Tech, it is our goal to continue our successful road ahead and supply the European market with state-of-the-art technology.

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More informationen:

Ringstraße 1
D-66459 Kirkel

Fon: +49 (0) 6841 / 934 93-0
Fax: +49 (0) 6841 / 934 93-10






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