BLUE MIFARE Classic® EV1 4K KEY FOBS (PACK OF 100) [AC-MF-KFS70]

These 4k Blue Key fobs use RFID technology at 13.56 MHz for access control. As they don’t require a battery there’s nothing to replace, and that extends their useable life.

These 4k Blue Key fobs use RFID technology at 13.56 MHz for access control. As they don’t require a battery there’s nothing to replace, and that extends their useable life.