M-IFARE Classic 4K 13.56MHZ ISO14443A RFID Cards M-IFARE Classic 4K Chip Smart Card With Security Logic RFID Memory 4K CARD，Printable Blank RFID Cards for Access Control, Hotel Key cads, etc（50pcs ）

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Quantity -- The parcel contains 50pcs M-IFARE Classic 4K RFID Smart Cards，each card individually OPP bag packed. Blank white both sides(no printed numbers, no magnetic strips and no slots or holes)
Material quality, production process --The M-IFARE Classic 4K card is made of durable and waterproof PVC material, and the antenna adopts ultrasonic winding technology. The card has a five layer structure, which is the same size as the credit card. The surface is smooth and glossy, wear-resistant, stable, non-toxic and odorless, and hygienic and safe.
High quality M-IFARE Classic 4K chips--M-IFARE Classic 4K chips are produced by the Fudan brand in Shanghai, China and are compatible with NXP chips. The wireless frequency of the M-IFARE Classic 4K card is 13.56MHz, which complies with the ISO14443A standard，Memory size：4kB（32 sectors of 4 blocks and 8 sectors of 16 blocks.256 blocks, with 16 bytes per block）Each chip has a unique UID number, but the UID cannot be changed or rewritten ，Default button: FF FF FF FF FF FF.
Compatible--These RFID cards work with KABA,SAFLOK,MIWA AND ONITY LOCKS,also compatible with RC522 and PN532 readers. But they can NOT work with HID,Salto and Assa Abloy Locks/Systems,Amiibo and Tagmo, etc.All cards are pre-programmed with a unique ID. The UID is NOT changeable.
Printable--These cards both sides are printable on all ISO Standard Desktop Photo ID Card Printers: Evolis, Zebra, Badgy, Fargo, Magicard, DataCard etc.【NOT USE FOR INKJET PRINTERS】