Over 48 years of experience
in sensor technology and sensor systems

Founded in 1975 and as the official Swiss representative of the Finnish sensor manufacturer Vaisala, KELAG Künzli Elektronik AG today not only provides consulting and sales services, but also takes care of the engineering of sensor technology and sensor systems. We also develop our own customer-specific measurement solutions. So no matter what challenge you are facing - we will work with you to find the most economical solution for both sides.

Do you have any questions or special requests? Our team of specialists will be happy to advise you. Just get in touch with us.

What makes us stand out


Reliable partner

We take your requirements on board for a long-term partnership.


All from one source

We work together with various suppliers to provide you with a customised measurement solution.


Swiss quality standards

All products that we develop ourselves are manufactured in Switzerland in cooperation with Swiss and foreign partners.


Product development

We not only sell standard products, but also develop our own customised measurement solutions.


ISO 9001:2015 certified

Every year we meet the high audit standards and continuously implement them in the company.

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Small but nice

Our lean organisational structure allows us short response times and a high degree of flexibility.

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Sectors / Applications

Our medium-sized enterprise (SME) is divided into three main business areas: Meteorology & Environment, Industrial OEM and Process Industry. Our products and systems can be found in numerous applications, wherever reliability, accuracy and high quality standards have top priority.

For nearly five decades, our customers have relied on our expertise in the fields of meteorology and environment. Our customers include well-known companies that rely on reliable and accurate data, especially in industries such as aerospace and road and rail transport, where safety is a top priority. Vaisala's sensors and weather stations create the best possible conditions for this. Vaisala is a global leader in weather, environmental and industrial measurements, with over 80 years of experience. Our sensors and weather stations not only meet the requirements of national and international weather services, but also comply with the guidelines of the World Meteorological Organization (WMO). Rely on us to find the best solutions for your meteorological and environmental needs.

In this area, we produce our own high-quality sensors here in Switzerland and abroad. Our core competencies are divided into two specialist groups:

Magnetic sensors (Reed, Hall & AMR)
Inclinometers and accelerometers

Our sensors are characterized by their unparalleled long-term stability and precision and meet the highest quality standards. We offer standard sensors (ex stock) and sensors from our kit system (customized). Important to us are cost-optimized solutions, which focus on the application.

In demanding environments and critical applications, reliable and accurate sensors are crucial. Our high-quality sensors offer unmatched long-term stability and precision, making them the ideal choice for control and monitoring purposes, even in highly regulated environments. This results in unrivaled product quality and lower total cost of ownership. Our technology and expertise help our customers optimize production processes and maintain the highest level of product quality.


Industry - Processes

Industry - OEM


Today, applications in industry, environment and meteorology require state-of-the-art sensor solutions. Our experienced engineering team works closely with you to achieve this. Our extensive know-how, our comprehensive experience and engineering expertise, our wide range of products and the representation of various renowned sensor manufacturers are the best possible prerequisites for us to develop the best possible sensor solutions for you.

No matter how specific your customer's requirements may be: with us, you will find the perfect and economical solution for every requirement, tailor-made!


In addition to the distribution of state-of-the-art sensors and sensor systems, our services also include project management and engineering services for integration into existing or new systems or the implementation of system replacements.

We also provide repairs and calibrations for our products to ensure their performance and reliability. Our experienced team of technicians ensures rapid troubleshooting and minimal downtime.

Our maintenance and support service ensures a long product life and maximises the availability of your sensors and systems. Through regular maintenance intervals and fast response times in case of emergency, we ensure that your systems always function perfectly.

Thanks to our services, you can be sure that your sensors and systems are always state-of-the-art and offer optimum protection and safety. Contact us to find out more. We will be happy to help you meet your requirements.

Our sales team loves challenges! They will be happy to help you find the most suitable measuring solution for you. With us, you are choosing a reliable partner who not only wants to sell you a measuring device, but also wants to work out a solution together with you that is as economical as possible for both sides.

Some of our system solutions only exist thanks to you, i.e. thanks to specific customer requests that were finally able to prevail. With our engineering and the personal skills of the individual employees, we have been able to implement a wide variety of system solutions in Switzerland on the basis of supplier products. Since the 1990s, individual solutions have been expanded again and again or individual components have been replaced.

Highest accuracy must be maintained! To ensure the best possible, there is only one thing to do: regularly calibrate all measuring instruments. It is also advantageous to have the device calibrated by the manufacturer - our suppliers offer high-quality calibration and repair services for this purpose. So simply send your device to us for calibration and / or repair and enjoy a stress-free service. We are able to meet all original requirements and strict quality standards.

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In addition to the installation and commissioning of your system, we offer maintenance and support and help you with concerns, operating questions or setting issues.

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Manufacturers and partners

Do you have any questions about our products or services? We will be happy to answer them personally. Please contact us.