Rfid Mifare Reader Writer pcb board TTL RS232 Interface YHY522, support HF 14443 A card, 3.3V , with small size and low price Happy new year---New year’s Specials Up to 50% off sale select ItemsPlease check our Aliexpree’s store http://www.aliexpress.com/store/101297The discount will be change, so please check our Aliexpress store Mifare Rfid Board TTL RS232 Interface YHY522Specification:l Complete Read/Write module with built-in transceiver antennal Auto checks for presence of tags and output interrupt informationl Auto read/write data from RFID tagl Auto operate value from epursel Easy LOCK/UNLOCK function to protect RFID informationl Encrypted EEPROM to store configured data and up to 40 groups of keysl Contactless operating frequency 13.56 MHzl Supports ISO14443A /MIFARE® ,Mifare® Classic1K,Mifare® Classic 4Kl RS232(TTL) Interface, baud rate up to 230400bpsl Fast data transfer Contactless communication up to 106KHzl Secure Encrypted contactless communicationl Ideal for emoney, secure access and fast data collection applicationsl Typical Operating Distance: 0 -- 50 mml Operating Voltage DC 2.7-3.6 Vl Watchdog timerl 1 LED indicator, 3 programmable I/O pinsl Size: 58mm × 35mm × 6mml Weight: 10g
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