ACR122S, contactless reader

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, FeliCa and NFC cards and devices, including all three NFC modes (reader, card emulation and peer-to-peer) and four types of NFC tags

Tech specs:

Dimensions	120.5 mm (L) x 72 mm (W) x 20.4 mm (H)
Weight	150 g
Interface	RS232 for data communication, USB for power transmission
Operating Distance	<= 50 mm (depends on tag type)
Supply Voltage	Regulated 5V DC
Supply Current	200 mA (operating); 50 mA (standby); 100 mA (normal)
Operating Temperature	0 - 50°C
Operating Frequency	13.56 MHz
Smart Card Interface Support	ISO14443 Type A & B Mifare FeliCa  4 types of NFC (ISO/IEC18092) tags
Compliance/Certifications	CCID, CE, FCC, VCCI, RoHS Compliant
Operating System Support	Windows ® 98, ME, 2000, Server 2003, XP, Vista, Server 2008, Server 2008 R2, 7 Windows ® CE 5.0 Linux Mac