RFID Tag (Card) - Dual 125KHz/13.56Mhz MIFARE 4K

These RFID card contain both of the two main current technologies in one package.

There is a 125kHz EM4200 chip, as well as a 4k MIFARE chip operating at 13.56MHz. The MIFARE chip is writeable. For both systems the antennas are embedded out of sight within the plastic of the card.