High Security Level DESFire EV3 2K 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 . DESFire EV1 or EV2 or newly EV3 version chip can have optional memory and 2K , 4K ,8K for using usual and they are all level of security using a 3DES or AES hardware cryptographic engine forenciphering transmission data ,it will greatly protect you data or money safe and hard to clone with another keyfob . they are widely using for cashless payment ,luxury items identification ,etc.

Utrlight-C 13.56MHz Hotel 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 ISO/IEC14443A  1-3 compliant and 13.56MHz  Ultralight® C rfid chip .this kind of chip is the first smart card IC for limited-use applications that offers solution developers and prociders the benefits of an open cryptography. With 3DES authentication for data access protected and widely uses for transportation or hotel security keytag or e-tickets applications .