100pcs/Lot UID Changeable Rewritable IC Tag MF 1K S50 13.56MHz ISO14443A Chinese Magic Back Door Command Keyfob(Mixed Color)

Welcome to my store, we will provide you with high-quality products and high-quality services, if you have any questions about the products, you can contact us, we will Size: you within 24 hours!100pcs/Lot UID Changeable Rewritable IC Tag MF 1K S50 13.56MHz ISO14443A Chinese Magic Back Door Command KeyfobThe product is as follows:1,UID card block 0 (UID's block) can be modified.2, card of the default password for 12 F,FFFFFFFFFFFF.Package Content100 * UID changeable keyfob for 1K s50Notice:Due to different monitors, there may be some color difference, which is normal.s

• 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