Building the EMI Sniffer together: smart design through collaboration

During the World of Industry, Technology & Science trade fair, from September 22 to 25 at Jaarbeurs Utrecht, it is impossible to miss: the exhibition gadget. This year, that is the EMI Sniffer, a handy device that makes electromagnetic interference both visible and audible. The housing is the responsibility of the team led by Commercial Director Eric van Rooy of Comdes Componenten.

What does the EMI Sniffer do?

EMI stands for electromagnetic interference: unwanted electromagnetic signals that can disrupt the operation of electronic devices. Think of radio noise, equipment malfunctions, or even system failures when devices influence each other via electromagnetic fields.

The EMI Sniffer makes this invisible 'noise' tangible. ‘With LED indication, you can immediately see how much interference is present,’ says Van Rooy. “The more LEDs that light up, the stronger the interference. In addition, the Sniffer contains a small loudspeaker that allows you to hear the differences in interference levels.” They are even considering an extra functionality to locate pipes in walls. “If that works, it will really become a tool that everyone wants to have.”

From idea to final product

The trade fair gadget is developed for each edition by a group of enthusiastic WoTS exhibitors who come up with a concept together and then work it out from A to Z. This year, the idea from electronics manufacturer EVAbits was the favorite. Van Rooy: “The next step is to determine in consultation who supplies and develops which component. Some companies opt for sponsorship only.”

The housing is fully in house Designed by Comdes Componenten. That is a difference compared to previous editions. “We have two product developers on staff, and this year we indicated that we would not only produce the case but also design it entirely ourselves.”

During the design phase, intensive consultation takes place between all parties involved. After all, small technical choices, such as the placement of a connector, can have a major impact on the manufacturability and quality of the gadget. Van Rooy is pleased with the end result. “It has become a sleek, attractive design. With a length of approximately 15 centimeters, the device fits comfortably in the hand and you can easily slip it into your pocket.”

Aesthetics and ease of use were central to the design, but consideration was also given to assembly on the exhibition floor. “Visitors have to assemble the device on site, which is why a click system was chosen that allows you to simply 'click' parts into place without screwing or gluing. No one wants long queues at the stands because people have to get to work with tools,‘ explains Van Rooy. ’With this design, everyone can assemble immediately.”

Although we refer to it as 'Dutch design', the housings are produced using injection molding at a regular business partner in China. Van Rooy: ‘We first create the design, and once that is approved, the first prototypes using 3D printing. This is followed by the production of the mold. After approval of the first samples Series production follows from the mold (FOT). That will be sometime in August. For WoTS 2026, we are making 1,500 units, plus extra for reserve.”

Co-creation between companies

One of the most beautiful aspects of the gadget project is the collaboration between various parties, according to Van Rooy. “All participants make their own contribution, ranging from electronics to mechanical parts. We also work with companies that are normally our competitors. That is fun, because it allows you to get to know each other in a different way. You have one common goal: to create a beautiful and useful gadget. By communicating openly and honestly and making use of each other's expertise, one plus one quickly equals three.”

The concept behind the gadget stimulates not only interaction between companies but also interaction on the exhibition floor. Visitors collect parts from participating exhibitors and assemble the product themselves. This generates extra traffic and conversations. “You get a very diverse group of people at your stand, from students to professionals. That yields valuable contacts.”

Practical value as a starting point

According to Van Rooy, the strength of the EMI Sniffer lies in the combination of technology, ease of use, and applicability. “What I personally find important is that a gadget is functional and doesn't disappear into a desk drawer after a week. With the EMI Sniffer, you really have something in your hands that you use in practice. Anyone who works with electronics can apply this – both professionally and privately.”

The EMI Sniffer is only available during WoTS 2026, while supplies last. Sign up for free. on the website and collect the gadget in 8 and 9 at the World of Electronics.