(Handheld 125Khz RFID ID EM4100 /4102, TK4100/4102 Card Reader Copier Writer Duplicator + 5 Cards 5 Keyfobs. Designed to read 125KHz RFID cards and write/program 125KHz writable RFID cards （ Note: 250KHz, 375KHz,500KHz Design reserved,Out of service ).
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