HF Ultralight EV1 512Bits ABS 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 .and 2 kinds of memory can be optional , will 512bits or 1024bits according to your final applications .water proof and small rfid keyfob can easy to take and widely using for hotel ,house and school door control access .It also can encrypt with hotel locks tag and work with locks system for most of hotels .

MF 4K ISO14443A 13.56MHz RFID Keyfob Tags are made of ABS material with rfid chip and antenna . they 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. This kind of rfid keyfob tag has embedded with M4K which is manufacturer programmed 7 byte UID or 4 byte NUID and individual set of two keys per sector to support multi-application with key hierarchy .Also it is working according to ISO / IEC 14443 Type A. Customer logo printing ,engraving number and barcode are available .