Gen1A S50 + T5577 Combo Key Fob

This NFC key fob contains 2 RFID Chips and Antennas. It has a UID-changeable S50 Mifare Classic 1K chip and a T5577 ID Changeable chip.

The UID of the Mifare 1K chip can be modified by PN532, PN532Killer, PCR532, Proxmark3 X, and iCopy-XS.

The ID of the T5577 chip can be modified by PN532Killer, Proxmark3 X and iCopy-XS.

With this Combo Key Fob, you can easily access 2 door systems under different frequencies.