CUID Gen2 Changeable RFID Tag 13.56Mhz Clone Token IC Copy Badge ISO14443 Proximity Sticker 1K S50 Rewritable Key

Specification:1. CUID card block 0 (UID block) can be modified arbitrarily.2. Block 0 can be modified directly with an ordinary IC reader/writer.3. The default password of the card is 12F, FFFFFFFFFFFF.4. Supports NFC modification of UID on Android phones, but does not support iPhone (but NFC on mobile phones is relatively unstable, we usually recommend using an RFID reader for reading and writing!)5. Please confirm that your device supports writing to CUID card.6. Due to different batches, the coils inside the wafer may be slightly different, but it is normal for the functions to be consistent (usually round)Frequency: 13.56 MHzProtocol: ISO14443ACapacity: 1k bytes EEPROM memoryNumber of rewrites: 100,000 timesModulation method: ASK Manchester encodingReading distance: 0 ~ 7 cm (depends on the card reader)Material: PVCSize: 25MM round