Amazon Hot Selling MF1S50 Contactless HF Printable 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 .It will fully compliance with ISO14443A and 13.56MHz NXP MIFARE® Classic EV1 1k byte memory chip .it has organized in 16 sectors with 4 blocks of 16 bytes each ( one block consists of 16 byte ) ,the mifare system offers real multi-application functionality comparable to the features of a processor keyfob ,Two diffeent keys for each sector support systems using key hierarchies.Also widely uses in door control access , school cantenn recharge keyfob ,etc .
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