PK52-Push Button series

As a special product variation of the PK-Pushbutton series, the PK52 is the eye-catcher of this product family. Its large and optically outstanding surface makes it easier for passengers to find the button. The visual and tactile recognition is further enhanced with directions in braille and self-explaining pictograms.

Specific requirements of the TSI PRM regarding people with reduced mobility are met with the PK52-pushbutton family.

Easy to locate
The large touch surface of this design and the built-in High-Power LEDs allow the user to locate the push button quickly, even in the dark. The special design of the light guide provides excellent lateral visibility of the PK52

Theft proof
Protection against external disassembly has been increased by integrating invisible mounting elements. The button can only be disassembled with an easy-to-handle tool especially designed by ESCHA TSL.

IP67 protection level
The pushbuttons are dust and waterproof according to IP67 protection level.

PK52-pushbutton Types
The PK52 has programmable electronics. Light and sound signals can be combined according to each customer’s individual needs. Depending on the individual application requirements the light and sound signals can be activated by two additional wires from the door control.


The following chart shows some commonly used standard types

PK52 Types 1 1.1 1.2 1.3 2 2.1 2.2 2.3 3 3.1 3.2 3.3
4LED Ready indication X X X X
6LED Ready indication X X X X X X X X
2LED Activation indication X X X X
4LED Activation indication X X X X
6LED Activation indication X X X X
Without sound X X X
With locate sound X X X
With acknowledgement sound X X X
With touch and acknowledgement sound X X X


Microprocessors allow the programming of individual switch functions. The universal programmable electronics allow a very flexible implementation of almost every customer’s requirements. With an extremely wide voltage range, optical and acoustic signals and intelligent switching functions, it is possible to create customized products.