Practical knowledge, technologies and insights from development

Control panel for industrial machines, membrane keypads, HMI applications

Functional key design for membrane keypads

Functional Key Design for Membrane Keyboards as a Key to Process Stability Technical Article from PC & Industry 04/2026 / Operation & Visualization Download Technical Article >> The design of user interfaces for industrial devices is often treated as a secondary consideration in the development process. Electronic architecture, protection classes, EMC requirements, or mechanical integration take precedence, while the interface is understood as merely a graphical representation. In reality, key design […]

Spring contact with Super APT coating for low contact impedance and high corrosion resistance

New Super APT coating for spring contacts

Increased reliability and corrosion resistance for spring contacts. We are expanding our range of spring contacts with the new Super-APT coating. This advanced surface coating improves resistance to electrolytic processes, thereby increasing the long-term reliability of electrical connections – especially in applications with moisture, perspiration, or salty air. The coating builds on our proven Super-AP technology and was specifically developed for

Custom plastic housing for measuring technology and electronic assemblies

Custom-designed plastic housings in measurement technology

From standard enclosures to customized solutions: When the switch makes economic sense. Many series-produced devices are manufactured in standard plastic enclosures for years because these represent a quick and pragmatic solution at the start of a project. However, with increasing production volumes and longer product lifecycles, the economic conditions change – and with them, the requirements for the enclosure design. Key Facts: Customized plastic enclosures

PSG-coated spring contacts and pogo pins as an alternative to gold plating

PSG coating for spring contacts and pogo pins

Economical Alternative to Gold: Rising raw material prices – especially for gold – are increasingly posing economic challenges for developers and buyers in contact and connection technology. This is particularly true for spring contacts and pogo pins, where gold layer thicknesses of 10 µm or more are often required, as these costs directly impact component prices. With PSG coating, a new alternative is now available.

Hand switch with silicone switching mat and plastic housing as an integrated HMI assembly

Project reference: Silicone switching mat as keyboard and seal

Custom plastic housing with integrated silicone touch mat for modern HMI solutions. For a custom HMI device, we developed a two-part plastic housing that, together with a specially designed silicone touch mat, combines several functions in a single component. The silicone touch mat simultaneously serves as the keypad, seals the two housing halves all around, and mechanically secures the entire assembly. This intelligent functional integration reduces

Custom keyboard unit made of multi-component injection molding with soft-touch surface and LED lighting

Keyboard unit manufactured using multi-component injection molding

Custom keyboard unit with soft-touch surface and LED backlighting. For a sophisticated operating solution, we have created a custom keyboard unit that combines aesthetics, haptics, and functionality in a single component. In this project, the keyboard layout was applied directly to the curved front frame using multi-component injection molding. This results in a seamless, perfectly fitting unit without additional assembly steps. Technical implementation using multi-component injection molding. The basic housing is made of...

Plastic housing with silicone seal

Reference example of a plastic sensor housing with seal: For a modern measuring system, we developed a two-part ABS plastic housing that impresses with its combination of stability, sealing, and design freedom. The housing consists of a top and bottom section, which are precisely joined together using a matching silicone seal (60A Shore). This solution offers not only reliable protection

Standard enclosure or customized enclosure solution?

A case study from medical technology: When developing new devices, the question often arises whether a standard housing can be used for the electronics. The reason for this consideration is obvious: standard housings are readily available, require no additional design effort, and initially incur only low entry costs. For this reason, they appear particularly attractive in...

High-speed data cables with connectors for industrial signal transmission

High-speed cables for modern data transmission

High-speed cables in custom lengths. We are expanding our cable assembly portfolio to include high-performance, high-speed cables. These connection solutions are specifically designed to transmit large amounts of data quickly, securely, and reliably. Supporting current standards such as SAS 3.0/4.0, PCIe 4.0/5.0, and IEEE 802.3, the cables provide a future-proof foundation for modern applications. We can customize the length of these high-speed cables to your specific requirements.

Plastic sample card with VDI and SPI surface standards for structure and polish grades

New plastic sample card in white

We are expanding our range of services for customers: White sample card as an aid in molded part design. We are pleased to now offer our plastic sample card in a white version. This is a direct response to the needs of numerous customers in medical technology, laboratory technology, and other sectors where light-colored plastic parts are standard – whether from [various sources].

Technical glass as a user interface for medical and laboratory technology equipment

Technical glass for medical and laboratory technology

Glass components for safe and hygienic device functions – from 100 pieces. Glass as a key material for technical applications. In medical and laboratory technology, the highest precision, hygiene, and reliability are essential. Technical glass is far more than a classic covering material in this field – it performs load-bearing functions: for example, as protection for displays and sensors, as

Mobile analyzer with magnetic plug-in system and HMI control unit

Magnetic connector system for analytical devices – design study

Innovative magnetic connectors with IP67 protection for mobile use. Modern analytical instruments often have to be used under harsh environmental conditions: dirt, moisture, tensile stress, and mechanical strain are commonplace in workshops and during mobile service calls. A reliable magnetic connector system can play a crucial role here. For a project, we developed a design study for a magnetic connection solution that is precisely tailored to

Magnetic connector in a plastic housing for compact and hygienic device integration

Magnetic connectors in plastic housings

Integrating Functionality and Design in Modern Device Concepts: In the development of modern devices for medical and industrial applications, the demand for space-saving, hygienic, and user-friendly connection solutions is growing. Classic connectors are increasingly reaching their limits – particularly regarding installation space, ease of use, and design integration. We rely on magnetic connectors that are seamlessly integrated into customer-specific molded plastic parts. This combination

Emergency stop push button with LED lighting for industrial machines and controls

New emergency stop push button with point LED lighting

Improved visibility in low-light conditions: We have expanded our product portfolio of electromechanical control elements with the new DIOH-S1-AGQ series of emergency stop pushbuttons. The pushbuttons are available with an aluminum or stainless steel cover and can be combined with a plastic or stainless steel housing, depending on requirements. A special feature is the integrated LED point illumination, which provides improved visibility.

Magnetic connector with cable and screw-in counterpart for front panel mounting

Screw-in magnetic connector for front panel installation

Compact design, high reliability, and rapid housing integration: In a reference project, we developed a new design solution for magnetic connectors that enables direct integration into front panels. The screw-in magnetic connector allows for quick and secure mounting in plastic and metal housings – similar to a push button. This design not only allows for easy adaptation to individual designs but also

IHK congratulates on the 25th company anniversary

N&H Technology celebrates its 25th anniversary

From Willich to the world: N&H Technology GmbH celebrates its 25th anniversary in 2025. Since its founding on December 12, 2000, by Managing Director Yine Zhang, the company has developed into a leading supplier of electromechanical assemblies and components. Its success story began at its first location in Krefeld in April 2001 with four employees.

Management team of SNT Electronics Technology and N&H Technology at the company's location in China

Expansion of our production capacities in the field of membrane keypads

Majority stake in FoShan SNT Electronics Technology Co., Ltd. We are pleased to announce a significant development in our company history: The successful integration of FoShan SNT Electronics Technology Co., Ltd. (SNT Technology) into the N&H Technology Group has been completed. With this strategic majority investment, we have significantly expanded our production capacity for membrane keypads and our

Award “Best Training Company 2024”

Apprenticeship 2024: Patrick Bergs and our company honored for outstanding achievements. Our apprentice, Patrick Bergs, has successfully completed his apprenticeship as an office management assistant with the grade "Very Good." The Middle Lower Rhine Chamber of Industry and Commerce (IHK) honored him for his outstanding performance at an official ceremony. Patrick is one of 197 apprentices who...

Capacitive membrane keypad with touch operation in industrial HMI application

Capacitive membrane keypads

Traditional Design Combined with Touch Technology Technical Article Published in Operating & Visualizing 03/2024 Introduction The development of input devices has made significant progress in recent decades. Capacitive membrane keypads combine the robustness of traditional membrane keypads with the advanced touch sensitivity of capacitive technologies. This offers an impressive combination of sensitivity, precision, and durability, making them suitable for a wide range of applications.

Silicone switch mats and membrane keypads compared for industrial and medical HMI operating solutions

Silicone keypad vs. membrane keypad

A Decision-Making Guide for Keyboard Developers Published in Meditronic 05/2023 In medical technology, keyboards and user interfaces are an indispensable aspect of device design. These components must not only be functional and reliable, but also meet the high standards of hygiene and user-friendliness required in clinical environments. From ultrasound machines to patient monitors and beyond...

Integrated magnetic connector with cable system in medical device for safe power and signal transmission

Integrated magnetic connectors

Custom Magnetic Connectors – Flat, Secure, and Fast Connections. Also published in Meditronic Journal 03/2023. Magnetic connectors with spring contacts meet the high demands of medical technology for safety, reliability, hygiene, and cleanability. They are increasingly used in the development of small medical devices such as hearing aids and wearables because they provide a fast, secure, and user-friendly connection between devices and

Spring contacts and pogo pins up to 15A for compact and powerful electrical connections

Spring contacts - small powerhouses with up to 15A

PC & Industry 04/2023 High integration density and very small design Spring contacts are indispensable in modern electronics. Their high integration density and very small size simplify assembly and thus significantly reduce costs. Especially in communications technology, where slim and design-oriented designs are required, spring contact pins are the first choice. They reduce

Magnetic connector prototype in round design with cable for customer-specific development

New prototype construction for magnetic plugs

Custom-made magnetic connectors as prototypes: Thanks to state-of-the-art technology, we can now better address the individual needs of our customers. By combining 3D printing and manual finishing, we can create custom-made magnetic connectors as prototypes. This "mini-series" comprises up to 20 samples, perfectly suited for initial installation trials and testing magnetic force.

1mm miniature SMD spring contact next to a 1 cent coin for size comparison for wearables

1mm miniature spring contact for SMD mounting

1mm Miniature Spring Contact for SMD Mounting – Perfect Solution for Wearables For smaller wearables such as Bluetooth devices, smartwatches, and power banks, there is a constantly growing need for smaller contact solutions. We now offer two new miniature contacts with a length of only 1mm, meeting the requirements for miniaturization and compact design. With a maximum stroke of 0,2mm and

Magnetic connectors with spring contacts and cable for industrial applications

Magnetic plugs and connectors for industrial applications

Design-oriented solution & efficient connection for industry PC & Industry 09-2022 Everyone is familiar with situations where connecting plugs and sockets is inconvenient and difficult. Diffuse lighting conditions and hard-to-reach installation locations have presented many a user with a real challenge. Especially small, delicate connector systems are often difficult to handle. Besides the frustration

Round magnetic connector with 360-degree rotation for flexible and twist-proof cable connection

Magnetic connectors for medical devices

Design-oriented plug-in solutions for HMI operator panels in medical technology. The trend towards more mobile, lighter, and more powerful medical devices presents designers with enormous challenges in developing innovative solutions. The devices must not only offer a wide range of functions and be aesthetically pleasing to the end customer, but also meet the stringent safety requirements of the medical industry.

Spring contacts with solder cup

Direct cable contact with solder cup: New to the product range are spring contacts in a plug-in design and a 360° rolling pin design with a solder cup. The solder cup allows for direct cable contact with both the spring contact and the mating contact. In conjunction with a suitable connector housing, wired, spring-loaded interface solutions can be easily implemented. Integrated rings on the sleeve ensure

Flat miniature stainless steel keyboard for industrial applications with a robust and enclosed surface

Flat miniature keyboards made of stainless steel

Slim design and extreme durability: We have expanded our product range with a series of miniature keyboards. These stainless steel keyboards are characterized by their slim design and extreme durability. They are available in three different sizes (191x88mm, 210x90mm and 224x110mm) as well as in various language layouts and can also be customized. The keyboards can be

Interview: Trends in switches, buttons & Co.

Published in Design&Elektronik 01/2022 Article as .pdf >> Interview with Design&Elektronik Trends in switches, buttons & co. Control elements on the way to Industry 4.0 »Touchscreen plus E-Mech: The combination makes it work« Today's HMIs mostly combine touch panels and electromechanical control elements. But flat membrane keypads with extensive features are still popular, especially in medical technology.

Round magnetic connectors with cable and various designs for industrial applications

Magnetic circular plugs: rotatable and design-oriented

Circular connector solutions with 360° rotation. We produce magnetic connectors, including cable assembly, for all sectors and industries. Our new circular connector solutions offer 360° rotation. Magnetic circular connectors are particularly advantageous in medical technology, where stringent hygiene requirements apply. The integrated magnet creates a self-aligning connection that allows for easy insertion even in challenging situations.