Built on What Works. Designed for What’s Next.
PK55: Advancing the PK5x Series
Small details often make the biggest difference, especially the ones people interact with every day. A push button is one of those details. Passengers use it countless times a day, often without even thinking about it. That is precisely why it must be reliable, robust, and durable.
In public transportation, expectations around comfort, hygiene, and accessibility continue to grow. In addition to rising passenger expectations, regulatory requirements such as TSI PRM and EN 14752 mean that passenger interfaces must meet increasingly high standards in terms of accessibility, safety, and reliability. Push buttons used at doors or in lavatories therefore play an essential role: they ensure safe and intuitive operation, including for passengers with reduced mobility. At the same time, operators face growing pressure to reduce maintenance effort, costs, and downtime.
This is where the PK55 comes in.
With the PK55, the MAFELEC TEAM continues the evolution of the PK5x series. Rather than replacing an existing product, it has been thoughtfully advanced: compatible with existing applications, familiar in design, and technically aligned with today’s requirements. The push button builds on the proven PK52 and carries its robust DNA into a new generation within the PK5x series. The result is not a break from what works, but a step forward that enables modernization while preserving existing systems.
Designed for everyday use
The PK55 is more than a mechanical push button. Alongside ergonomic tactile activation that provides clear haptic feedback and meets all PRM requirements, an optional touchless version is available to further enhance convenience and hygiene.
The touchless version, PK55T, uses an integrated infrared sensor combined with a dedicated algorithm that analyzes movement and only triggers on intentional actions. Gesture recognition, such as approach, approach-and-withdraw, or swipe motions, allows for precise, situation-specific activation. Movements that are too slow, too fast, or unintentional do not trigger the push button.
Depending on the application, for example door control or lavatories, predefined gesture profiles can be used, customized, or the touchless function can be activated or deactivated as required. The touchless setup can also be updated on push buttons already in operation. The technology adapts to users, not the other way around, allowing hygiene, accessibility, and ease of use to work together seamlessly.
Another new feature is that the coating on the touch surface is no longer optional, but now comes as standard across all push buttons in the PK5x series. This ensures enhanced resistance to UV exposure as well as aggressive cleaning agents and graffiti removers, helping maintain both reliable performance and a high-quality appearance even under demanding operating conditions.
Designed for integration
In addition to the touchless version, the PK55 is available in several configurations to support different installation requirements.
For glass door applications, a version with a 62.5 mm diameter glass cutout is available. This allows existing installations to be upgraded while keeping the original system architecture in place.
The PK55 is also available in a flush front-mounting version with a low profile, which does not require rear access during installation. The stainless steel front bezel can be customized in both size and color, allowing it to integrate seamlessly into various vehicle interior designs.
A flush rear-mounting version is also available. In this configuration, a stainless steel front bezel is combined with a rear mounting adapter featuring three fixing points. The adapter can be freely positioned, enabling particularly flexible integration into different installation environments.
Designed from experience
Installation and maintenance have also been refined based on practical experience. The redesigned front bezel fastening system is based directly on customer feedback. Using a specially developed tool, the push button can be installed more easily and removed just as quickly. In service situations or in case of damage, this enables faster replacement of individual components without complex disassembly.
The design is complemented by a compact, mechanically reverse-polarity-protected M8 (8 mm) connector for 24 VDC applications. The robust IP67 connection simplifies integration into door systems, reduces wiring effort, and ensures a reliable electrical connection in daily operation.
The PK55 is what happens when proven technology is thoughtfully advanced.
