GRÄF & MEYER - LDA-Products and NSC Sicherheitstechnik

After the successful integration of the LDA products "NEO" and "ONE" in 2019, representing a significant enrichment in the voice alarm range (both technological as well as cost effective), the next step towards a successful future, followed on 01.03.2020. For quite some time combining voice alarm systems with fire alarm technology has been considered.

Since distribution channels and target markets are largely identical for both businesses, synergies are obvious. After many conversations we decided to look for a strong partner active in fire alarm industry. Searching for this partner was easy, as we already have a valued partnership for many years with NSC Sicherheitstechnik, developer and manufacturer of fire alarm systems. The owners of NSC Sicherheitstechnik GmbH also share this view.

It did not take long before both parties agreed to build the future together. To show employees, suppliers and specially customers, how serious they take this synergy, NSC Sicherheitstechnik GmbH has made a significant contribution to become shareholder of Gräf & Meyer GmbH.

For our mutual partners this results in considerable time and cost savings - paired with a high level of advisory skills and with combined procurement of goods – all from one contact person.

As of July 1st, 2020, both 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 are at your disposal, as well as six independent offices in the Netherlands, Italy, Spain, Portugal, Greece and Dubai and in addition, two sales offices in London and Moscow.

Together with LDA AudioTech and NSC Sicherheitstechnik, it is our goal 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.

GRÄF & MEYER - Why do we deal with this?

"Imagine staying in a hotel overnight and somewhere seems to have happened something, maybe even a threatening danger; nobody informs or tells you what to do, just sirens are heard. Guests standing in corridors and wonder how they should behave and respond."
The same can happen in many other public buildings… such as shopping malls, office buildings, industrial plants, railway stations, airports, as well as schools and hotels, where many people are present at different times.

This is one of the main reasons why a reliable, acoustical Life Safety concept is essential for announcing of inevitable safety information. All people at danger shall be safely guided out of the danger area by emergency response or automated alarming/alerting and responding instructions.

In general, public address systems are used to distribute speech and/or music to a wider public. Depending on the project – indoor or outdoor - there are various requirements to ensure correct transmission and quality of speech/sound reproduction in terms of sound pressure level (SPL) and speech intelligibility (STI).

Differences are made depending on the type of event, for example live events such as conferences, concerts or theater performances with very high quality demands, and the particular PA systems, where the present people get entertained, informed and possibly have to be evacuated.

GRÄF & MEYER - History

GRÄF & MEYER GmbH is a growing company, founded in 1994 by the graduate engineers (Electrical Engineering) Walter Gräf and Jürgen Meyer.

Our development engineers are continuously striving to further develop the GRÄF & MEYER products, meeting the constant increasing levels of safety standards. 

Our philosophy is to satisfy people's need for Life Safety, using the highest level of technical knowledge.

Base for these are the European standards, which need to be implemented compentenly and cost-effectively.

The production facility of the GRÄF & MEYER products is subject to constant control according production regulations like ISO 9001 and DIN 14675. All safety-related product lines have been certified according EN 54-16.

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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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