Please note that our office will be closed for holidays from 24 December 2025 to 6 January 2026 inclusive. During this period, we are unable to process enquiries or orders and cannot accept any incoming goods.
Elsner Elektronik has specialised in control systems and sensors for buildings since 1990. Our building technology makes commercial buildings intelligent and turns residential buildings into smart homes.
All Elsner products are developed and produced at the company headquarters in Ostelsheim, Germany. Highly qualified staff and the latest technology guarantee a consistently high standard of quality. Elsner Elektronik offers both complete systems for climate control in buildings and individual components for various data interfaces (KNX, RS485 and Modbus). Whether control centre, weather or indoor sensor, actuator or system device: All our products combine flexible technical solutions, ease of use and future-oriented design.
We are an owner-managed company that has specialised in the development and production of innovative electronic products for several decades. Our goal is to provide our customers with the latest technologies and solutions in building automation, ensuring that their requirements are met in the best possible way.
Today, the next generation has also joined the management team and is continuing the successful story of Elsner Elektronik.
We shape the future with purpose.
Our mission & values
Our mission and values form the foundation of Elsner Elektronik. They guide us in developing innovative products and in how we work together every day. Quality, reliability, innovation and a forward-looking mindset are not buzzwords for us but principles we live by – both internally and externally. They shape how we understand building automation, how we bring new ideas to life and how we build long-term trust with customers and partners.
Learn more about what drives us and what we stand for.
We stand for quality and environmental responsibility.
Our certifications
Care, efficiency and the responsible use of resources shape our daily work. This is confirmed by our ISO 9001 certification for quality management and ISO 14001 certification for environmental management. The result is products you can rely on – developed with a clear focus on quality and long service life.
In Ostelsheim, we develop and manufacture our control devices and sensors from the first idea through to the finished product. This ensures dependable quality – genuine workmanship made in Germany.
For us, function and design always go hand in hand. Numerous awards show that we are on the right track. As an active member of the KNX community, we help shape the future of intelligent building technology – with innovation, responsibility and a passion for detail.
We act with ecological, economic and social responsibility.
Our contribution to sustainability
Sustainability is an integral part of our company philosophy. Our actions are guided by energy efficiency, the careful use of resources and environmental compatibility – reflected, for example, in our company building with its photovoltaic system, in our sustainable mobility strategy and in our certified environmental management processes. Equally important to us is social engagement: through projects and donations, we support initiatives both in our region and around the world.
