RFID/NFC ISO14443 type A Reader Module

RFID Read/Write module Base on RC522 and with built-in transceiver antenna
Auto checks for presence of tags and output interrupt information
Auto read/write data from RFID tag 
Auto increment/decrement value when reading card
Easy LOCK/UNLOCK function to protect RFID information
Encrypted EEPROM to store configured data and up to 40 groups of keys
Contactless operating frequency 13.56 MHz
Supports ISO14443A /MF Classic 1k,MF Classic 4k,MF Ultra light,NTAG NTAG203/213
RS232 Interface, baud rate up to 230400bps 
Fast data transfer Contactless communication up to 106KHz
Secure Encrypted contactless communication
Typical Operating Distance: 0–50 mm
Operating Voltage ：DC 2.7-3.6V
Watchdog timer
1 LED indicator, 3 programmable I/O pins
Internal self test
Size: 58mm × 35mm × 6mm
Weight:10g