A broad portfolio of products and the basis for new developments – for fire protection, HVAC, instrumentation & control, OEM partners, planners and architects.

Product Finder


Customer-specific developments and innovative relays for metering, energy management, automotive and e-mobility.

Product Finder


Made-to-measure developments and innovative solutions: here, we give you an insight into our problem-solving skills.

Product Finder

Privacy Policy

We, the company of Gruner AG, thank you for your visit to our website pages and for your interest in our company and our services. We place great priority on the protection of your privacy when processing data. We shall therefore only process your personal data in accordance with the provisions of German and European data protection legislation. We wish for you to feel secure when visiting our website pages.

With this privacy policy, we are complying with our information obligations towards the visitors and users of these website pages as defined in Art. 13 of the EU General Data Protection Regulation (EU-GDPR). A central aspect of this for us is the protection of personal data. Personal data is individual information about personal or factual circumstances of an identified or identifiable natural person. This includes information such as name, address, e-mail address and telephone number. The legal principles governing data protection can be found in the EU-GDPR as well as in the German legislation on telemedia (TMG) and in the EU ePrivacy ordinance.

Your rights in the data protection area as a user of this website (rights of affected persons)
Data protection legislation views you as a party affected by our collecting data about your person during your visit to our website. Accordingly, legislation provides you with certain rights as an affected party that you possess as a user of this website. In detail, this covers the following rights:

At any time, you have the right to obtain information free of charge about your personal data stored by us, their origin and recipient, and the purpose of any data processing – without giving reasons. You also have a right to amend, correct, block or delete those details. You can also restrict the processing of your details and/or object to that processing (the right of objection) and you also have a fundamental right to data transferability. Where you have provided us with your consent to process your details, you can revoke that consent at any time. You also have the right to appeal to the supervisory authorities in accordance with Art. 77 of EU-GDPR.

Contact details: person responsible – data protection coordinators – data protection officer
If you have any questions about data protection at Gruner AG that have not been answered in this privacy policy statement, or if you wish to invoke your rights as an affected party, the following contact options are available to you:

The Board of Management identified in the Legal Notice section of is responsible for data processing. However, since the Board is occupied with many other matters, we advise you to contact our data protection coordinators ( by e-mail. You can also use the postal service, and our address can also be found in the Legal Notice section.

Furthermore, Gruner AG has appointed an external data protection officer. That officer can also be contacted at We wish to advise that you can contact any of our employees for details of your rights as an affected party. However, it would be very helpful to us if you would direct questions about data protection to our data protection coordinators (

If you wish to use the right of objection defined in Art. 77 of EU-GDPR, please contact the competent supervisory authority.

Recipients of personal data
If you communicate personal data to us, the principal recipients of those details are the employees of Gruner AG entrusted with that task. Furthermore, it is possible that we may appoint other companies and individual people to perform tasks for us, e.g. services that you requested from us with the help of the contact form (for example to send out a printed copy of a product brochure). In such cases, this can lead to your details being processed by a company appointed by us for the purpose defined by yourself. For further details, please refer to ’Obligations of employees and external service providers’ and to ’Collaboration with external service providers’.

Transmission of personal data to a third country
We do not intend to disseminate any personal data outside the area of jurisdiction of EU-GDPR

Storage time
Personal data communicated to us via our website are only stored until the purpose for which they were entrusted to us has been discharged in full. Where trade and taxation-related storage periods need to be observed, the storage period for certain kinds of data may extend for up to ten years.

Purpose of data collection
It is usually possible to use our website without having to provide any personal data. For the use of individual services on our website, different regulations may arise. In such cases, these will be explained separately below, informing you in particular of the nature, scope and purpose of the collection, use and processing of personal data. Nonetheless, we shall only process personal data to the extent required for the provision of a functional website and of our content and services. If personal data is thus collected, it is for the purpose of the technical provision of our online presence, for information purposes and contractual purposes associated with the provision of services. Your personal data will be used exclusively for the aforementioned purposes and only within the scope and to the extent necessary to fulfil these purposes.

Legal basis of data collection
Personal data may only be processed on a lawful basis. If we process personal data within the scope of our web presence, this is generally based on the protection of the legitimate interests of the person responsible in accordance with Art. 6 (1) lit. f EU-GDPR.

The protection of legitimate interests involves a balanced assessment of those interests, which include our own as the company responsible for processing data, and the interests of users of our website pages. As a company, we wish to inform you about our company as well as its products and services. You as a user and potential customer, supplier, competitor, party seeking information and/or applicant have an interest in informing yourselves about us as well as our services and products, in a technically accessible and convenient manner. Furthermore, we give our visitors the opportunity to get in touch with us via the website. Accordingly, the processing of data is in the interests of both parties. At the same time, the processing of personal data is reduced to a minimum from which we conclude that there is a sufficient legal principle governing that processing, one that upholds the legitimate interests of the parties involved.

As part of the application procedure, we use the legal basis of the contract and the process of drafting a contract (Art. 6 (1) lit. b EU-GDPR), in particular Section § 26 BDSG-new (data processing for purposes of an employment relationship). You can find further details in the ’Applications’ section.

In addition, we also make use of the legal basis of consent within the application procedure (Art. 6 (1) lit. a EU-GDPR). This consent is voluntary and serves the purpose of personal recruitment and the transfer of your details to an internal talent pool. You can find further details in the ’Applications’ section. You are free to decide whether you wish to grant consent or not. No adverse consequences arise if you choose not to grant your consent. At any future date, you can revoke wholly or in part any consent you may have granted. The legitimate status of data processing founded upon consent remains in place until consent is revoked. This means that, despite consent being revoked, processing prior to that point in time remains lawful.

Our website uses what are known as cookies that are there to make our Internet presence more user-friendly, effective and safer – for example when the aim is to speed up navigation to our website. Furthermore, cookies enable us to measure the frequency of visits to pages on the website and the generic usage of those pages.

Cookies are small text files that are stored on your computer system. Cookies do not cause any damage to your computer, and they contain no viruses. Please note that some of these cookies will be transferred from our server to your computer system, most of them being so-called ’session cookies’. Session cookies are characterised by the fact that they are deleted automatically from your hard drive at the end of a browser session. Other cookies remain on your computer system and make it possible to identify your computer system on your next visit (known as 'persistent cookies’). Of course, you can reject cookies at any time, provided that your browser permits this. We would however point out that, in such cases, you may not be able to use the full scope of functions on our website. The Help function in the menu bar of most web browsers explains to you how to prevent your browser from accepting new cookies, how to advise your browser that you have just received a new cookie, and how to disable all of the cookies you have received. Of course, you can also delete cookies at a later date. This process is dependent on the browser and the operating system. We would ask you to research the process for retrospective deletion on your system.

Server log
Every visit to the pages of this web presence will be recorded and stored in what are known as server log files. This data is only used for the technical analysis of server usage. Specifically, the following items of data are collected:

  • The requesting host address (IP address)
  • Time and date of the visit
  • Name of the requested file
  • HTTP status code
  • Transmitted volume of data
  • Web page from which you visit us (referrer URL)
  • Browser/Operating system/Interface
  • Details of the server service used
  • Protocol version

This anonymous data is stored separately from any personal data you may provide, so it is not possible to trace it back to a specific person. The data is only communicated to third parties to the extent stipulated by legislation, or where a court order requires this to be done. No communication of this data for commercial or non-commercial purposes takes place. However, we reserve the right to check this data at a later date if we have specific grounds for suspecting unlawful use.

Contact option
On our website, we provide you with an option for contacting us by e-mail and using contact forms. Your details from the enquiry form, including the contact details provided by you there for processing the enquiry and for connection questions, are then encrypted and forwarded to us where they are then stored. If you wish to contact us by e-mail, please note that we cannot assure the confidentiality of any information we receive in the form of unencrypted e-mails. The content of unencrypted e-mails can be viewed by third parties (also refer to the 'Information security' section).

Use and disclosure of personal data
If you appoint us to perform a service, we shall only use your personal data to the extent necessary to carry out the order (e.g. to process information enquiries or orders for brochures). In particular, this includes forwarding your details to transport companies, banks or other parties involved in the delivery of a service, or service providers used for contractual fulfilment. Beyond this, we will not pass on or sell your personal data to third parties. The following exceptions apply to this procedure: we disclose customer accounts and the personal data of customers if we are required to do so by legislation, or if this disclosure is essential, or to protect centrally our rights and the rights of our customers and those of third parties, for example in the event of attacks on our network infrastructure. This can for example include the exchange of data with companies who specialise in the prevention or minimisation of abuse and credit card fraud and/or IT security. For clarification, we state explicitly that, in this context, no data is communicated to these companies for commercial purposes, which would contradict the provisions of this privacy policy.

Obligation of employees and external service providers
Naturally, our employees and the service providers appointed by us are bound by confidentiality and by the need to comply with GDPR provisions in the EU.

Collaboration with external service providers
We appoint other companies and individuals with the performance of tasks for us. Examples include the delivery of parcels, the sending of letters or e-mails, the analysis of our databases, IT services, promotional measures, the handling of payments and customer service operations. These service providers have access to the personal information they need to perform their assigned tasks. However, they are not permitted to use it for other purposes. Furthermore, they are obliged to treat this information in accordance with this privacy policy and the EU GDPR. If any of these sub-contractors are ’processors’ as defined in Art. 28 of EU GDPR, we will have concluded the appropriate legally-compliant contracts with them.

Information security
Gruner AG employs appropriate technical and organisational security measures to the best of our knowledge at the present time in order to protect the data you have provided to us from accidental or deliberate manipulation, loss, destruction or access by unauthorised persons. This ensures that your data is stored in a safe operating environment to which the general public does not have access. We review our security measures at regular intervals and improve them continuously in accordance with technological development. If you wish to contact us by e-mail, please note that we cannot assure the confidentiality of any information we receive in the form of unencrypted e-mails. The content of unencrypted e-mails can be viewed by third parties. We therefore advise you to send us information in encrypted form, or via the postal system. We only ever use your e-mail address for correspondence with you. It is not used in any other way, nor is it disclosed to third parties.

Protection of your data by TLS and/or SSL
For secure data transmission on the Internet, we use the hybrid encryption protocol Transport Layer Security (TLS), much better known by its previous designation Secure Sockets Layer software (SSL). This software encrypts the information communicated by you. All information relating to data security is stored in encrypted form in a protected database.

Consent to, status and amendment of this privacy policy
By using our website, you consent to the kind of data processing described above. The current status is 22/05/2018. We reserve the right to amend this privacy policy at any future date, with due regard to the currently applicable data protection stipulations. We shall publish those amendments as and when they are made