Donut Shape FM11RF08 MF1K 13.56MHz HF RFID Keyfob is made of ABS material with rfid chip and antenna . It will be durable and injection ABS case then sealing rfid chip under ultrasonic machine without any space sideview so that you can use them in out-door harsh environment and waterproof. FM11RF08 ( normally call F08 for short ) is the contactless card IC according to ISO14443 Type A development by China Shanghai FuDan Microelectronics Co.,Ltd and 1Kx8 bits EEPROM organization .It can fully compatiable with MIFARE Classic 1K chip the only different will each sector has its own two secret files for systems using key hierarchies .
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