Parallax USA RFID 25mm Disk round Tag

These EM-4100 family products are designed to work with our RFID Card Reader and RFID Reader USB and are considered passive tags. Each tag has a unique 10 digit ID, so multiple tags can be used in a single project and may be purchased in any quantity.

Features:
    EM4100 Family Passive Tags
    125 kHz activating frequency
    Readable from 2 to 4 inches of RFID reader
    Discrete size

Compatible with These Kits:
    RFID Card Reader (Serial)
    RFID Card Reader (USB)
    RFID Read/Write Module (Serial)