November 26, 2015

50 Questions to the President – Part 2

This week our interview series with Wolfgang Stallmeyer, President and Shareholder of INDUSTRONIC, continues.

We hope you will enjoy reading part 2 of our series “50 Questions to the President”.

50 years - 50 questions to the president

Q22: Today in Wertheim, tomorrow in India and the day after tomorrow in Singapore – how do you manage this balancing act?

A: We love the cultural diversity of the world and our customers.

Q23: You have subsidiaries and partners worldwide; how does this contribute to your international success?

A: We excel in those geographical areas where we have strong employees and partners.

Q24: Do you intend to increase your worldwide presence further?

A: In most countries we work with partners who operate as resellers or on commission basis. We already have subsidiaries in the USA and China (sales and service) and will launch a new subsidiary in Singapore in January 2016.

Q25: What significance would a subsidiary in the Middle East have for INDUSTRONIC?

A: A hub in the Middle East could offer support to our partners there. It would be crucial to find the right person for this task.

Q26: You have been designated as a „German world market leader“. Is this motto a mundane phrase? Or does it have real validity?

A: Our customers trust and want German quality. For this reason our components are predominantly made in Germany.

Q 27: How do your systems contribute to the safety of people and machinery?

A: In demanding industrial environments systems like ours – for warning, alarm and evacuation – are mandatory.

Q28: In industrial communications, how does improved operability benefit the safety of human beings and machines?

A: Usability is a key requirement of our products; the necessary technological progress should not be implemented at the expense of easy usage.

Q29: What are INDUSTRONIC’s core competencies?

A: Communication functions tailored to individual customer requirements.

Q30: What differentiates INDUSTRONIC from its competitors?

A: Flexible solutions ranging from pre-busy signalling to plant warning systems with pre-recorded alarm messages which are triggered in case of emergency.

Q31: What do your customers value most about you? What makes INDUSTRONIC so exceptional?

A: Outstanding quality, service, flexibility and great value for your money.

Q32: How do you benefit from the dialog with your customers?

A: A good relationship with our customers is a pivotal requirement to ensure their and our satisfaction.

Q33: Do customers in your market niche place great importance on services?

A: The focus used to be on hardware. Today, software and services are becoming increasingly important. Services range from project pre-design to maintenance agreements with guaranteed response times.

Q34: What is your opinion on the maintenance, product management and security of investment in regard to your products?

A: Our systems are sturdy and maintenance-friendly. We also take special care that installed systems are upgradable in case of extensions and new requirements.

Q35: What can you say in regard to the durability of your communication systems?

A: Our systems are made to last. Even today some of the old relay systems are still running – notwithstanding that they are almost 50 years old and that technical advances and new demands result in more frequent upgrades of communication systems nowadays.

Q36: Is that the standard in your niche?

A: We are confident our systems are extraordinarily durable and long lasting.


Check in with us again soon to read part 3…

November 12, 2015

50 Questions to the President – Part 1


Wolfgang Stallmeyer

Wolfgang Stallmeyer

50 years of INDUSTRONIC – 50 questions to the President!

At the close of our anniversary year we are starting a new series of “Questions to the President”. In these interviews we will be asking Wolfgang Stallmeyer, President and Shareholder of INDUSTRONIC, to share his thoughts about himself, the company and the industrial communication market.

This interview will give you an in-depth look at INDUSTRONIC.

We hope you enjoy reading!



Q1: This year INDUSTRONIC celebrated its 50th Anniversary. How do you explain your international success?

A: The main determinants of our success are technical ambition, diligence, economical behaviour and a stroke of luck in critical situations.

Q2: INDUSTRONIC is one of the global market leaders in the region, how does a middle sized company accomplish such an achievement?

A: We concentrate on a definite market niche.

Q3: How are you looking to position your company in your niche?

A: Various communication philosophies exist. Our philosophy is based on direct two-way communication with a connection set-up time of max. 200 ms and pre-signalling of busy intercom stations. We want to become the worldwide opinion leader for this communication philosophy.

Q4: What is your corporate philosophy?

A: Our corporate philosophy is reflected very well in our corporate motto: „We are the Engineers of Communication“.

Q5: Can you please define your motto further?

A: We love to develop the communications solutions needed by, and useful to, our customers and their individual situations.

Q6: How many people are employed at INDUSTRONIC?

A: In Germany we have around 160 employees, including our subsidiaries we total more than 180 employees.

Q7: What does INDUSTRONIC offer its employees? Why should professionals choose INDUSTRONIC as an employer?

A: We are an innovative company with attractive job positions and a high degree of direct responsibility.

Q8: What can you say in regard to the work climate at INDUSTRONIC?

A: We operate on a project oriented basis. For this reason we cultivate a cooperative management style.

Q9: What attributes of your employees do you value most? What do you require of them?

A: Self-confidence, openness and quality.

Q10: INDUSTRONIC is a family run enterprise. Does this fact contribute to your worldwide success?

A: Yes, since the decision making process is short.

Q11: How long have you been President of INDUSTRONIC?

A: For nine years now – unbelievable how time flies.

Q12: What do you like about your job as President?

A: The entrepreneurial responsibility.

Q13: Have you learned something new in your function as President?

A: Yes – to express criticism in person and not per e-mail!

Q14: Which experiences do cherish you the most?

A: The visits to our customers around the globe and our company’s Christmas staff parties.

Q15: Tell us about your typical workday, please.

A: Actually there are no typical workdays, each day is different. My tasks alternate between meetings, emails, phone calls and conceptual work.

Q16: How do you achieve balance in your leisure time?

A: Through sports and cultural activities.

Q17: Are you socially committed in your leisure time?

A: I am a member of the lions club – one of the largest NGOs worldwide. Its members are voluntarily engaged in helping people in need. I serve as president of the Wertheim lions club for the 2015/16 term.

Q18: How satisfied are you with your location in Wertheim?

A: The location is ideal for us. Here in the countryside we have access to highly motivated employees while the universities of Würzburg and Aschaffenburg continuously supply us with young engineers. The proximity of Frankfurt International Airport offers easy connections to our customers worldwide.

Q19: Which three activities and experiences do you recommend for visitors to your area?

A: The annual carnival is the cultural highlight of our region. The landscape is very beautiful and inviting to mountainbikers. And, the local wine is outstanding…

Q20: INDUSTRONIC demonstrates a strong social commitment both locally and nationwide. Is this part of your corporate culture?

A: Yes, for us it is a matter of course. Each Christmas we donate funds to local and national charitable projects.

Q21: Which values and principals are important to INDUSTRONIC?

A: Our values reflect sustainable economic success in fair-minded cooperation with our employees, customers and suppliers.


Check in with us in the next weeks to read more…

October 27, 2015

Speech intelligibility and current standards with PAGA systems


Not so many years ago speech intelligibility was synonymous with audibility. And audibility is nothing else than good sound coverage which means: ‘Speakers must be 10 to 15 dB louder than the ambient noise’…

…but that is only half the truth.

With the following article we want to show you what can influence speech intelligibility and what are the main factors that could prevent clear speech transmission by a PAGA system.



In physical terms, the sound pressure level (SPL) decreases by 6 dB when the distance is doubled. This means a loudspeaker provides 100 dB at 1 meter distance, 94 dB at 2 meters, 88 dB at 4 meters and so on. This so-called inverse distance law 1/r is only valid within a free field and with point-shaped sound sources.

In reality you will get diffuse reflections (scattering) from buildings and other structures, absorption from surfaces and other obstacles that disturb and affect sound propagation.


Ambient Noise, Signal to Noise and Masking Effects

Imagine you have an industrial plant with many machines and pumps and other sound sources that produce a lot of unwanted noise, let’s say 90 dB(A) in broadband.

Now you can say: I do not care – my loudspeakers can produce a SPL of 125 dB / 1 meter.
But you must consider that the speech intelligibility decreases if our ear receives sound levels above 85 – 90 dB.

This is a relatively new finding which must be considered in the STI (Speech Transmission Index) measurement and analysis. It is part of the so-called masking effect which considers some further psychoacoustic effects.

So be careful with loudspeaker SPLs which clearly exceed 90 dB – that might result in bad speech intelligibility.


Frequency and Loudspeaker Data

Most loudspeaker manufacturers state the maximum SPL at 1 kHz, but the most relevant and ’used’ frequency in human speech is at 700 Hz and speech is a mixture of different frequencies and various modulations.

So it makes no sense to choose loudspeakers that are ‘very loud’ but have a frequency response like a triangle.


Please compare the following frequency plots of two different loudspeakers from different manufacturers.
Loudspeaker A is stated with 108 dB / 1 m;  Loudspeaker B with 103 dB / 1 m.


Loudspeaker A:


Loudspeaker B:



If you select loudspeaker A only knowing the difference of 108 dB vs. 103 dB without comparing the frequency diagrams, you will be possibly disappointed when hearing this loudspeaker in the field.


Frequency Spacing

The more frequency spacing is between the speech or alarm tone and the noise source frequency, the better is the intelligibility and audibility of that information signal. This is another psychoacoustic effect that you can use in your favour.

Often a female speaker is better than a male speaker due to the above mentioned fact.



That is a major factor that can completely disturb the speech intelligibility while the audibility is good.

Where are the distortion sources?

From microphone to amplifiers to loudspeakers – every device in the audio chain could cause distortion. No single device in this chain should be overdriven or operated beyond its specification.



In the last few years, different standards such as EN60849, EN54-16 and IEC 60268-16 were issued which describe and require measurements, calculations and proof of speech intelligibility.

For this purpose and for fast response, the Speech Transmission Index STI was introduced. This index can be calculated with different audio calculation tools and can be measured with modern audio measurement devices.

These standards and tools give us the possibility to develop and install PAGA systems with a highly intelligible speech transfer.

But it is also always a task and challenge to get rid of the barriers that industrial plants put in the way.

As a result we design PAGA and communication systems which can clearly transmit warnings and information to working staff and people – and save lives in emergency situations.

October 12, 2015

INDUSTRONIC staff celebrates on the Wertheim fair


Mr. Stallmeyer together with some of his employees

Every year at the beginning of October the “Michaelismesse” takes place in Wertheim. It is like a very small version of the Oktoberfest, a fair with brass band music, beer and different amusement rides.

Traditionally, the INDUSTRONIC staff goes there to have an enjoyable afternoon together. It is always a good opportunity to talk to colleagues outside the everyday business and get to know them from another perspective.




The INDUSTRONIC staff celebrates on the Wertheim fair

This year’s visit to the Wertheim fair was planned in an already very busy week with lots of customer visits, training dates and a tough project schedule. Nevertheless, a good share of the employees followed the invitation of the General Management and went there to enjoy themselves. We also welcomed some of our customers who stayed in Wertheim for a FAT procedure on that day. Additionally, many of our service people which were here for a two days training session joined us for a beer or two.

I am sure that everybody had a good time and we are glad that our managers support teambuilding events like this.

September 25, 2015

How we define ourselves

Do you know our corporate slogan? “The Engineers of Communication

Sounds simple and catchy? Yes. Was it easy to come up with? No.

Actually it is the essence of quite some introspection on our part.

It defines our mission AND identity!

Therefore it was an arduous task – the preceding brainstorms revolved around the essence of who we are and how we define ourselves.

The questions we asked ourselves reached deep into core of our corporate soul:

–    What is our mission?
–    What are the benefits of our products or services?
–    What really distinguishes us from our competitors
–    What do our customers associate the name INDUSTRONIC?
–    What makes our services so special?

Our answers? See for yourself:


Engineers of Communication


This 50th anniversary year was the perfect occasion for us to review these statements.

Our conclusion: Yes, we live up to our promises – every single day!

We would love to hear your feedback!

September 11, 2015

Call Storage

Today´s topic of INDUSTRONIC functions is “Call Storage” where an incoming call request is stored for a later callback and is visually indicated.

No Call is Lost

Due to the blinking LED on the key, the operator knows immediately who tried to reach him when he was absent. Via simple keypress, he can then call back. To draw attention, you can additionally play back an acoustic signal or trigger a flashing warning beacon.

After the callback or after a pre-defined time has elapsed, the stored call request is deleted.

Call Storage Procedure

The following illustration shows the call storage function in detail.

This picture shows step 1 of the call storage function.

This picture shows step 2 of the call storage function.

This picture shows step 3 of the call storage function.





















Flashing Warning Beacon

A warning beacon can be additionally activated to visually indicate an active call storage. This way, people even notice a missed call request if they are not in the immediate vicinity of the intercom station.

Acoustic Tone

An acoustic tone can be additionally played back to acoustically indicate a stored call request. The acoustic tone is played back via the integrated speaker of the intercom station and/or the remote speaker.

Download a more detailed version of this blog article as PDF here.

See also my previous articles about the functions direct two-way communication and dynamic two-way communication.

August 27, 2015

Project Management – Introducing our Order Processing Department

In the latest blog post my colleague Janina gave you a better understanding of how the INDUSTRONIC Sales Department operates. With this week’s article we will take a closer look at the next steps along the order process.

As soon as an order is placed with INDUSTRONIC and contract review is finished the Sales Department hands over the project to our Project Management team. First, it is assigned to one of the project managers in the department. This person is the main contact relating to the project and coordinates all the tasks that are nessesary for a successfull delivery. The responsibility goes even further and includes payment monitoring and customer support during the warranty period.

Before an order confirmation is sent to the customer, possible issues regarding the delivery conditions and terms of payment have to be clarified. Most of the time, this involves tasks such as answering emails and taking care of any formalities. For technical questions the Project Engineering Department or in some cases even the product developers have to be consulted. To make sure that all components for a respective project are delivered in time, the coordination with the Purchasing Department is also important. Finally, after a production date is defined, the order confirmation can be sent.

Project Management

The project manager and colleagues from other departments are working closely together.

In addition to that, the Project Management team is responsible for the organisation and supervision of factory acceptance tests with customers and partners. Depending on the size of the project, the number of participants and the duration can vary from one person that stays for just one day to a big group that is on site for the whole week.

When the delivery date is fixed, the project manager has to organize the packaging and shipping. Especially for goods that are shipped by vessel the requirements, such as seaworthy packaging, are very high. And of course, the whole customs clearance process has to be coordinated when it comes to international deliveries.

Aside from these complex projects, the Order Processing Department handles spare part deliveries as well as repair orders and is also responsible for the coordination of service orders.

As you can see, the tasks our Project Management team has to deal with every day are very wide-ranging.

August 12, 2015



In our series about different departments of our company we would like to introduce you to our Sales team today.

It consists of 20 dedicated colleagues who work for National and International Sales.

Our headquarters in Wertheim accommodates the Customer Center South which is responsible for sales in the southern part of Germany and in other German-speaking countries. Furthermore, the Export Sales team is located here which deals with the distribution of our systems around the world.

INDUSTRONIC is also represented by the Customer Service Centers Western Germany and Berlin which cover the remaining regions of Germany as well as Belgium and the Netherlands.

Usually, one Area Sales Manager is responsible for several sales areas and is supported in his or her job by committed assistants. Developing new markets, gaining valuable customers and acquiring new projects are among the tasks of the daily business routine as well as the preparation and management of quotations and not to forget the handling of incoming orders.

To facilitate communication via telephone, email or fax for our international customers, our Sales team offers advice in German, English, Spanish, French or Russian language.

Besides our locations in Germany, we benefit from the support of our subsidiaries in China and the USA, which operate almost independently on their respective market. They assume a number of tasks from sales to commissioning to After Sales Services.

With our Representative Office in Singapore, INDUSTRONIC provides a competent local contact. This means short distances for our customers, rapid access to our expertise while being able to bridge the time difference between our headquarters and South-East Asia.

In addition to our direct INDUSTRONIC locations, our sales network is complemented by our numerous partners around the world. Thanks to their commitment we can be successful on the global market.

Together with this international team we are able provide optimum support for our customers in all matters.

July 24, 2015

Write Your Thesis at INDUSTRONIC

– You study electrical engineering, informatics or media design?
– You approach the end of your studies and you are looking for a challenging topic for your Bachelor or Master thesis
– You want to gain an insight into a globally operating company with subsidiaries and partners all over the world?
– You want to learn from experts giving you the best support when writing your thesis while being able to work independently.

If all of this applies to you, then INDUSTRONIC is the right place for you.

As already mentioned in our blog posts “INDUSTRONIC furthers Education” and “The Engineers of Tomorrow” we seek to promote young talents and pave the way for the next generation of experts.

We are constantly looking for committed students who want to successfully start their careers with an internship, apprenticeship or by writing about an interesting topic in our company. Furthermore, INDUSTRONIC always encourages new ways of thinking and is pleased to implement innovative ideas.

What we look for
Interested and motivated students (Bachelor / Master / Diploma) who would like to work on the following topics in our company.

You may think of a different topic for your thesis? No problem. Write an unsolicited application to communicating your ideas.

INDUSTRONIC is a leading international provider of industrial communication systems. For more than 50 years, our name stands for innovation, quality and service. We have worldwide subsidiaries and representative offices (e.g. in China, the USA and Singapore). Furthermore, our well-developed international partner network provides competent local support.

Write your thesis in close cooperation with our experts. We will support you at all levels while granting you the freedom to develop your own ideas (within a company).
At INDUSTRONIC you will gain a first insight into the working life before completion of your studies and perhaps you will have the chance to join our staff directly afterwards.

For further information on our company, please visit our corporate website under

We look forward to your application.


July 10, 2015

Get to know the NPA – Modular Design & Flexible Installation

The IP-based PA unit of the NPA series is used for intelligent public address solutions. It seamlessly interfaces with the INTRON-D plus communication and public address system via Ethernet/IP.

Its modular design offers individual combinations of slide-in amplifier modules and power supply units. They can be simply inserted and replaced on the back of the device. You can also install a redundant power supply unit and amplifier module to ensure uninterrupted operation. There is also the option to provide an additional NPA device as backup component (N+1 component redundancy) to comply with increased safety requirements.


Redundancy concept


Slide-in modules & units









You can start small with the basic coniguration offering 1 digital amplifier channel, up to 4 monitored speaker circuits and an output power of 300 Watts. If you require more amplifier power, you can easily expand your device at any time.

The NPA’s maximum configuration comes with 4 digital amplifier channels which can be used simultaneously, up to 8 monitored speaker circuits and a maximum output power of 600 Watts. Use several IP PA units to implement even more extensive solutions.

The NPA can be installed both as centralized or decentralized solution. If you decide in favor of a centralized installation, the NPA is usually mounted into a central exchange cabinet. For a decentralized installation, the device is installed indoors at different places throughout the plant and near the speakers. The short cable distances reduce cabling costs. In general, the NPA can be installed anywhere on the LAN treated as independent IP amplifier with integrated zone selection and optional speaker monitoring.


Decentralized installation of the NPA

If you are interested in this topic and want to learn more about our NPA series, have a look at our NPA brochure and NPA data sheet.

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