125kHz EM4100&EM4200 RFID Card – WXR
2021-10-20u2002·u2002125kHz EM4100&EM4200 RFID Card. The operating frequency of the EM4100 proximity card is 100 kHz~150 kHz. Each EM proximity card has a unique serial number. EM4100 proximity card is an ideal solution for access control and time attendance systems and does not require a …
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