The Crystal Fob works with any of the Dark Crystal readers & Keypad Readers. They are classed as UID (Uniquely Identified).
UID credentials are simply numbered identically to the printed number on the Card or Fob. These are more readily available from stock and there is no need to keep track of any site code. Just order the quantity of Fobs required.
They are ideal for applications where it is more convenient to keep the RFID credential with other keys on a keyring. Fully compatible with the P4 Controller range.
Porgeny Dark Crystal RFID Reader