Thẻ móc khóa RFID S50 13.56Khz Thẻ móc khóa RFID S50 13.56Khz 1K byte EEprom memory , orgamized in 16 sector with 4 blocks of 16 bytes each (one block consists of 16 byte) User definable access conditions & password for each memory block Data retention of 10 years Write endurance 100,000 cycle Unique serial number.