How does it work?

Qibixx ZahlKontakt activates relay outputs after the merchant has paid a fixed price via TWINT. It is really easy.

The main component of Qibixx ZahlKontakt is the controller. It has access to the internet through its network connector.
The small device is usually installed on site in a switch cabinet, doing its work inconspicuously hidden from the outside world.

One controller switches up to four contacts independently for a chosen duration of time. This includes the payment processes which too work completely in parallel.

The products or quantities of products are to be distinguished from the four outputs, because each controller can manage up to 15 different products.

Consider the example where Product 1 switches on the electricity to a socket for 2 hours.
Product 2 can, for example, switch the same socket for a whole day (24 hours).

In addition, it is possible to define a pulsed output with Qibixx ZahlKontakt, where the number of pulses can once again represent different product quantities.

For TWINT, the controllers are cash registers or payment terminals. Qibixx ZahlKontakt generates a QR code for each product that identifies the register/merchant and the product. The QR codes are printed and put clearly visible in the point of sale.

To pay, the customer scans the QR code with their TWINT app. This way TWINT knows which controller to ask for the price. After the customer confirms the asked price in his app, TWINT processes the payment with the banks involved and informs the controller accordingly.

The controller then activates the corresponding output.




  • Out-of-the-box payment solution via smartphone
  • Suitable for small businesses as well as for the replication on a large scale
  • Parallel payments for up to 4 devices with just one unit
  • Easy integration into existing systems


  • Remote configuration and monitoring
  • Automatic software update
  • No separate power supply with POE (Power-over-Ethernet)
  • Enough power to drive small devices directly


  • Extremely comfortable to use – payments in seconds
  • Available to everyone in Switzerland

Find Support

Qibixx Support

Head to our Documentation Portal and find out everything about Qibixx Zahlkontakt.

Of course, get in touch with us if you need help setting up or understanding your solution.

If an internet connection is provided to the solution, our device will keep itself updated with our latest firmware.

Technical Information


Technical Data

Universal, programmable I/O device server

The Zahlkontakt Controller is a fully programmable I/O device server of Qibixx, based on Linux/Lede/OpenWRT. The device features a wide range of interfaces such as USB, digital Inputs, Relays. It is IPv4 or IPv6 capable. Supporting multiple communication protocols, the Zahlkontakt Controller can be used in multiple applications such as automation building control, public transport and many more. Qibixx products are developed in Switzerland and manufactured to the highest standards.

  • Embedded Linux / Lede / OpenWRT
  • Programmable in C++, Lua or Python
  • IPv4 / IPv6 stack
  • One 10/100 Ethernet port
  • 4 Relay Outputs
  • 4 Digital Outputs
  • USB Host Interface
  • Barionet DIN-Rail Case
  • Supply Voltage 9-30 VDC
pdfDownload the Product Sheet (PDF)