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How do I connect the payment terminal to the cash register?

Selina
  • Updated

Cash Register Duo

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Cash Register Flex

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POS Mobile Mini

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POS Mobile

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POS Desk

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Since 2025, KLARA offers its own payment terminals with the latest generation of cash register systems. This integrates hardware, software, and payments directly in one solution, working seamlessly together. No third-party systems are needed anymore.

 

You have a complete system in one software environment and a single point of contact for onboarding & support:

 

  • KLARA Cash Register Duo (desktop cash register with customer display) - Requires a payment terminal
  • KLARA Cash Register Flex (mobile tablet cash register) - Is itself a payment terminal with NFC chip
  • POS Mobile Mini - Our smallest and most affordable payment terminal with 4G & WiFi
  • POS Mobile - Our larger, mobile payment terminal with a bigger display, with 4G & WiFi
  • POS Desk - Stationary payment terminal, Ethernet connection

 

All our terminals are certified according to the highest and newest PCI6 standard.

 

Need help with setup/onboarding? Our team is happy to assist you.

Book an appointment here: https://www.klara.ch/terminbuchung-pos-onboarding 

 

 

 

Third-party providers (not recommended):

KLARA will discontinue support for interfaces to payment third-party providers such as Worldline, Nexi, or SumUp as of 10/31/2026. Switching to KLARA Payments is necessary to use a cash register-connected payment terminal. New customers will no longer be onboarded with third-party systems.

 

We advise against integrating third-party payment terminals with our cash register, as in these cases we cannot guarantee support options, compatibility, or full functionality. However, technically there are options to use devices from certain providers until 10/31/2026:

 

Worldline (formerly SIX):

With the Worldline (formerly SIX) payment terminal, you have received instructions to help you set up the payment terminal.

Afterwards, connect the payment terminal to the cash register via the tablet.

To do this, open 'Settings' on the tablet and click the toggle for the payment terminal. Depending on which terminal you want to connect to the cash register, select the appropriate option there. If you do not have a 'Yomani', the selection is irrelevant.

In the next step, enter the Terminal ID (TID) or the IP address of the terminal. In both cases, the tablet and the terminal must be on the same LAN network.

 

Payment terminal connection failed

If you cannot connect your payment terminal to the tablet, please check the following:

  • Are the terminal and tablet on the same LAN network?
  • Is the Terminal ID (TID) or IP address correct?

If the connection still does not work, try using the IP address instead of the TID or vice versa.

If the connection is possible but the card payment process still does not work, please check whether the terminal is properly connected to the internet or if there is a connection to a previous system.

 

 

These terminals can be connected

Here is a list of all currently possible terminals:

 

Nexi (formerly CCV):

  • Terminal A920 
  • Terminal A77 --> please contact support@klara.ch if you want to order the A77. The A77go is not a 100% alternative as it cannot be configured as a cash register-integrated terminal
  • Terminal Q30
  • Terminal Q80
  • CCV ITS S300 --> no longer available for order
  • CCV Mobile S920 --> no longer available for order
  • CCV Fly D200 --> no longer available for order

 

Worldline (formerly SIX):

For the cash register system to connect with the Worldline payment terminal, it must provide the TIM API as an interface.

  • Lane/5000 PINPAD
  • Move/5000 Portable Pinpad
  • Desk/5000 Pinpad
  • Link/2500 Portable Pinpad
  • Move 3500 MOBILE WLAN --> no longer available for order
  • mprimes (e355 MOBILE PINPAD) --> no longer available for order
  • yomani XR PINPAD --> no longer available for order
  • yomani XR COMPACT --> no longer available for order
  • yomani touch XR PINPAD --> no longer available for order
  • yomani touch XR COMPACT --> no longer available for order
  • yoximo MOBILE PINPAD --> no longer available for order

 

SumUp:

  • SumUp Lite
  • SumUp Air --> no longer available for order

  • SumUp Solo --> the Solo is delivered by default with WiFi connection and must first be switched to Bluetooth. You can easily establish this connection:

    1. Tap the arrow icon at the top of your Solo’s screen
    2. Select “Connections”.
    3. Select "Bluetooth"
    4. Enable the switch.
    5. Confirm with "Yes"
    6. Remember the displayed number; it will be shown when connecting to the cash register.

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