MIELEU 100pcs/Lot RFID Key Fobs Ring 125KHz TK4100 EM 4100 Proximity ABS ID Smail Key Tags for Access Control(Green color)

Small enough to fit on a key ring Provides an external number for easy identification and control Can be placed on a key ring for convenient entry Supports formats up to 85 bits, with over 137 billion codesRFID/HID/T5577/CET5577/EM4100/TK4001/EM4001/TK4100/ISO11784/11785/ISO FDX-B /Manchester/FSK/PSK/NRZ etc. Long-lasting durability in construction for sustained performance Compact and easy to carry and use,Rewritable functionality: Can be written countless times

MIELEU

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