The ACR122S NFC Contactless Smart Card Reader is the serial interface reader in the ACR122 family developed based on the 13.56 MHz Contactless (RFID) Technology and compliant with the ISO/IEC 18092 Standard for Near Field Communication (NFC). It supports MIFARE®, ISO 14443 Type A and B, and all four types of NFC tags.

ACR122S is a plug-and-play device which does not require any driver installation. It comes with a built-in ISO 7816 SAM slot for enhanced security, plus a buzzer and two LEDs for rich user interaction. ACR122S can also read and write faster and more efficiently by making use of up to 424 Kbps for tag access. The proximity operating distance of ACR122S is up to 5 cm, depending on the type of tag used.

ACR122S is also available in module form for easy integration into bigger machines, like POS terminals, physical access devices and vending machines. Typical applications of the ACR122S reader include e-payment, e-ticketing for events and mass transit, toll road fare collection, and network authentication.

PC-Linked Serial (RS232) Contactless Reader NFC Reader SAM Slot(s)
  • Serial RS-232 Interface: Baud Rate = 115200 bps, 8-N-1    
  • USB interface for power supply    
  • CCID-like fram format (Binary format)    
  • Smart Card Reader:    
    • Read/Write speed of up to 424 kbps    
    • Built-in antenna for contactless tag access, with card reading distance of up to 50 mm (depending on tag type)    
    • Supports ISO 14443 Type A and B, MIFARE, FeliCa, and all 4 types of NFC (ISO/IEC 18092) tags
    • Built-in anti-collision feature (only one tag is accessed at any time)    
    • ISO 7816-compliant SAM slot    
  • Built-in Peripherals:    
    • Two user-controllable LEDs    
    • User-controllable buzzer    



Physical Characteristics
Weight (g) 148 g
Dimensions (mm) 125.0 mm (L) x 72.0 mm (W) x 20.4 mm (H)
Serial Interface
Power Source From USB Port
Protocol RS-232
Connector Type DB-9 Connector
Cable Length 1.5 m , Fixed (DB9 + USB)
Contactless Smart Card Interface
Protocol ISO 14443-4 Compliant Card, T=CL 
MIFARE® Classic Card, T=CL 
ISO18092, NFC Tags 
FeliCa
Standard ISO/IEC 18092 NFC, ISO 14443 Type A & B, MIFARE®, FeliCa
SAM Card Interface
Protocol T=0
Number of Slots 1 Standard SIM-sized Card Slot
Standard ISO 7816 Class A (5 V)
Built-in Peripherals
LED 2 single-color: Red and Green
Buzzer Monotone
Certifications/Compliance
Certifications/Compliance ISO 18092 ISO 14443 ISO 7816 (SAM Slot) VCCI (Japan) KC (Korea) CE FCC RoHS 2
Device Driver Operating System Support
Device Driver Operating System Support Windows®
Linux®

ACR122S is end-of-life already. To inquire about a suitable replacement or pending orders, please contact [email protected].

Drivers for ACR122S
Serial Interface OS Support
Library Package  138 KB
Version 1.0.0.1
19-Nov-2010
Win 2000, Win XP, Win XP x64, Win Vista, Win Vista x64, Win 7, Win 7 x64, Win Server 2003, Win Server 2003 x64, Win Server 2003 R2, Win Server 2003 R2 x64, Win Server 2008, Win Server 2008 x64, Win Server 2008 R2 x64
Library Package  481 KB
Version 1.0.0
23-Dec-2010
Linux



Manuals & Datasheets for ACR122S
Product Presentation

Product Presentation of ACR122S NFC Contactless Smart Card Reader

Technical Specification

Technical Specification of ACR122S NFC Contactless Smart Card Reader

Application Programming Interface

API Driver Manual of ACR122S NFC Contactless Smart Card Reader

Communication Protocol

Communication Protocol Manual of ACR122S NFC Contactless Smart Card Reader