cVEND plug flex II

Contactless only terminal with certified Payment Kernes (EMV Level 2)

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cVEND plug

The cVEND plug is a compact payment module without a housing. With approx. 80mm x 70mm it is hardly bigger than a credit card. It is a “full-fledged” payment terminal with the latest PCI 5.x and EMVCo. Certifications for fully integrated installation in non-metallic fronts. In addition to common connections such as RS232, USB, LAN, the module also offers a slot for a μSD card and an expansion slot for plug-in modules. The interaction with the customer takes place via 6 LEDs and a buzzer which is also suitable for noisy environments. Depending on the application, it is available in different software configurations.


flex II

The flex II variant corresponds to flex I, but the SDK also contains certified EMV Level 2 cores for VISA, Mastercard, American Express, Discover, JCB, Union Pay and the kernel of the German girocard. Customers can integrate these fully certified kernels into their own payment applications, which significantly reduces development and approval costs.




cVEND is used successfully thousands of times in transit applications around the globe.


cVEND plug is designed for flush integration in any kind of non-conducting front plates like Ticket Validators, Driver Consoles, Kiosk-Systems and many others.


cVEND plug is electrically and mechanically designed for transit applications and complies with transit specifications of global card brands as well as with railway and automotive standards.


cVEND plug is fully approved for open-loop payment by EMVCo and PCI PTS


Supports with the same priority open-loop contactless payment cards and mobile wallets from international and domestic payment card brands as well as closed-loop cards like mifare, ITSO, VDV-KA, calypso.


cVEND plug is VISA ready for Transit listed


The cVEND specific secure Linux operating system together with an easy to use SDK and the cVEND Multi-Application architecture makes application development easy and fast and supports open-loop and closed-loop cards totally independent with the same priority.


The step-by-step upgrade concept enables migration from closed-loop to open-loop. Level 2 kernel packages can be upgraded later in field.


Its innovative security concepts with Crypto Plug-Ins supports symmetric and asymmetric encryption, key-derivation and remote key loading and makes cVEND capable for PCI P2PE solutions.


The low power standby mode makes it suitable for battery powered application.





Technical Specifications and Approvals


Electronics module with plastics front element with back-lit contactless symbol

Dimensions (W x H x D)



79 mm x 70 mm x 31,1 mm

     VisibleDiameter 28,5 mm

Environmental conditions


     Operating Temperature

-30 °C to +70 °C


-30 °C to +80 °C

     Humidity5 % to 95 % not condensing

Mechanical Approvals


Power Supply



5.0 to 5.5 V DC (ripple <80 mVpp)

     Power Connector

Molex Micro-Fit 2-pole

Power Consumption



typ. <1 A, peripherals excluded

     Stand by

<1 mA (Wake-up by digital input and time controlled)

     Wake-upReady for operation < 2 sec.
User Interface6 LED (4 green, 1 red, 1 yellow), internal multi-frequency Buzzer, illuminated Payment Logo

Contactless Interface

ISO/IEC 14443-A / -B (NFC reader/writer mode) for Open-Loop and Closed Loop Cards

 Support for NFC devices in card emulation mode
mifare family and Sony FeliCa

SAM Interface

4 x SAM Socket with optional SAM Extension Board

Memory Extension

µSD Socket (SDIO / SD, V 2.0) with optional SAM Extension Board

Peripheral Interfaces

Ethernet, RS232 (V.24), RS232-LVTTL, USB 2.0 Device and Host, SPI, I²C


RGB-bus for external TFT display

CPU and Security

Secure ARM 9 CPU with 384 MHz, Real Time Memory Encryption, Cryptographic Hardware Acceleration and True Random Number Generator

 Tamper-proof Hardware, protection against side-channel attacks
ClockReal Time Clock – Battery backed
 20 ppm at 25 degrees C, 100 ppm over the entire temperature range


     RAM128 MByte (256 MByte option)
     FLASH256 MByte (512 MByte option)


3V Lithium Battery, 540 mAh, not removable
Lifetime 15 years at 25 °C

Online connection

Ethernet, IP over USB

Conformity to standards 
Environment ApprovalRoHS 2011/65/EU
Contactless ApprovalsEMVCo 2.6b contactless level 1 approved
 CEN/TS 16794-1:2017 Class D approved
Mechanical ApprovalsShock and Vibration: IEC 60068-2-6, IEC 60068-2-27, EN 50155, IEC 61373
 Impact protection: IK10 (installed in equivalent robust housing)
 Front Side Protection Class: IP65  (installed in equivalent robust housing)
Electrical ApprovalsRED 2014/53/EU
 FCC 47 CFR Part 15
 IC RSS-Gen, RSS-210
 EN ECE – R10 (Automotive in conjunction with related components)
 ISO 10605, Category 3

Payment Security


 Australian Payment Network Type 2

Available Contactless Payment Kernel

Mastercard Contactless Reader 3.1.1
VISA Contactless Payment 2.2
Union Pay Transit
American Express Expresspay 3.1
Discover contactless D-PAS 1.0
RuPay qSPARC 2.0
Bancomat contactless
PURE 2.1.8


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Hightech - Made in Germany

FEIG ELECTRONIC​​​​​​​ has been a development partner and specialist in contactless identification (RFID), control electronics, traffic sensors and payment terminals for more than 50 years. From our headquarters in Weilburg, Germany, the ca. 400 people who work for us contribute to technological progress by developing innovative solutions for a wide range of applications and industries.

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