ACR122u RFID Smart Card NFC Card Reader Writer For Access Control System
The ACR122U NFC Reader is a PC-linked contactless smart card reader/writer developed based on 13.56 MHz Contactless (RFID) Technology. Compliant with the ISO/IEC18092 standard for Near Field Communication (NFC), it supports ISO 14443 A and B cards, but also all four types of NFC tags.
ACR122U is compliant with both CCID and PC/SC. Thus, it is a plug-and-play USB device allowing interoperability with different devices and applications. With an access speed of up to 424 kbps and a full USB speed of up to 12 Mbps, ACR122U can also read and write more quickly and efficiently. The proximity operating distance of ACR122U is up to 5 cm, depending on the type of contactless tag in use.
Feature
1.USB 2.0 Full Speed Interface
2.CCID Compliance
3.Smart Card Reader:
Read/write speed up to 424 kbps
Built-in antenna forcontactless tagaccess, with card reading distance of up to 50 mm(depending on tag type)
Supports ISO14443TypeAand B cards, and all 4 types of NFC (ISO/IEC 18092)tags
Built-in anti-collision feature (only 1 tag is accessed at any time)
4.Application Programming Interface:
Supports PC/SC
Supports CT-API (through wrapper on top of PC/SC)
5.Peripherals:
Audited Supplier 
){kind=link}