What Is the UN20 Clearing Device and How Does It Connect to a Vending Machine?
In the world of vending machines, the payment terminal is one of the most critical components. It is responsible for accepting the payment, communicating with the payment processor, and passing the authorization to the machine to release the product.
What Is the UN20 Clearing Device?
One of the most common uses in the world of Unattended Retail is the UN20 payment terminal, designed for vending machines, kiosks, self-service stations, parking lots, EV charging stations, and self-service systems. It is an Android-based terminal, designed to integrate into a wide range of systems through various communication interfaces.
UN20 is a payment terminal (Unattended Payment Terminal) designed specifically for cashierless points of sale. Unlike a regular checkout terminal, it is built for continuous operation in outdoor and indoor conditions, with high durability and support for modern payment methods.
The terminal supports, among others:
- EMV chip credit cards
- Contactless
- Apple Pay
- Google Pay
- NFC
- Magnetic cards (when required)
- QR Codes (on supported models and configurations)
How Does the Clearing Device Connect to the Machine?
One of the key advantages of UN20 is the flexibility in connection interfaces.
How Does the Clearing Device Connect to the Machine?
UN20 offers maximum flexibility in connecting to a wide range of machines and systems, according to integration needs and machine configuration.
Physical Interfaces
Direct connection to the machine via USB, Ethernet, RS232, MDB, or Digital I/O. Enables compatibility with a wide range of machines and existing infrastructure.
Wireless Communication
Support for connection via Wi-Fi and Bluetooth for convenient and flexible communication. Suitable for environments that require a wireless connection without physical infrastructure.
Cellular Communication
Support for 4G / LTE according to the terminal configuration. Enables standalone connectivity even in locations without access to a local network.
Workflow With the UN20 Clearing Device:
1. The customer chooses a product
2. The machine requests payment
3. UN20 displays the transaction amount
4. The customer taps a card or phone
5. The terminal communicates with the payment server
6. Approval is received
7. The approval is passed to the machine controller
8. The machine releases the product
9. An indication of a successful sale is received
10. The transaction is closed and recorded in the system
Information Security
UN20 is designed to operate in a secure payments environment and supports EMV standards and the relevant PCI standards, according to the certifications and the payment solution it is integrated with.
Key Advantages
The UN20 supports a wide range of communication interfaces and enables simple connection to both new and existing machines. It is suited for continuous operation in Self-Service environments and provides fast, stable, and flexible integration for a wide range of solutions.
Connection, Communication and Terminal Management
Summary
The UN20 terminal is a modern and flexible solution for the world of vending machines. The ability to connect via MDB, RS232, Ethernet and additional interfaces, together with support for advanced payment methods and remote management, makes it a suitable choice both for new projects and for upgrading existing machines. Before implementation, it is recommended to verify compatibility with the machine model, the communication protocol, and the management system used by the business.















