ACR122U NFC Contactless Smart Card Reader (NFC READER)
ACR122是一款在频率为13.56MHz的射频技术上开发出来的的连机智能卡读写器，符合ISO/IEC18092（NFC）标准。它不仅支持Mifare卡和符合 ISO 14443标准的 A类和B类卡，而且还支持NFC以及FeliCa非接触式技术。
此外，ACR122 是一款符合CCID 标准的USB热插拔设备，是个人身份安全认证以及网上小额支付等应用领域的理想选择。此外，它还可以广泛地应用于访问控制、电子支付、公交电子票务、高速公路收费系统、网络验证、物流以及供应链管理等领域。
ACR122是一款USB全速设备（12 Mbps），能以212 Kbp、242Kbp的速度读取NFC标签，因而这款设备相对于同类设备而言，其读写速度更快而且效率更高。操作则根据非接触标签而定，最大可达5cm。
为了提高安全系数， 您可选择在ACR122中配置一个符合ISO7816-3标准的 SAM 卡槽。此外，ACS还可以提供ACR122模块，便于嵌入到大型的设备中，比如POS终端、门禁设备以及自动贩卖机等等。
APPLICATIONS:
e-Government
e-Banking and e-Payment
e-Healthcare
Transportation
Network Security
Access Control
Loyalty Program
FEATURES:
CCID-compliant
PC/SC-compliant
Read/write speed 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
Supports new Mifare Ultralight C and Mifare Plus SL1 (4 Byte UID) and SL3
Built-in anti-collision feature (at least 1 card is detected when multiple cards are presented)
User-controllable bi-color LED
User-controllable buzzer (optional)
SAM socket (optional)
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