This low cost RFID module is perfect for connecting to an Arduino. It connects via a 9600 bps UART serial connection and outputs the tag number when an EM4100 compatible RFID card comes near. Perfect for access control projects.
Includes external antenna
Maximum effective distance approx 5 cm.
Less than 100ms decoding time
UART interface (5 Volt TTL RS232)
Support EM4100 compatible read only or read/write tags