Custom Dual Frequency RFID Chip 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 ,This type rfid keyfob has enough space and can set up dual frequency rfid inside , you can check with your project and chose correctly rfid chip let us to do ,such as 13.56mhz with 125khz , 13.56mhz with 860-960mhz or 125khz with 860-960mhz ,etc .

LF 125KHz AT5577 RFID Chip Read and Write 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 ,This type rfid keyfob has embedded with AT5577 125khz read and writable LF chip ,which is compatible with T5557 and ATA5567 ( these two chips have off-production for some years ) .Total 363 Bits EEPROM memory and can read and configurable for ISO/IEC 11784/ 11785 compatibility.Adaptable to different applications such as acess control , animal ID and waste managment .

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 .

13.56MHz Ntag215 E-co Friendly ABS NFC Keyfob for Amiibo 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 use Ntag215 nfc chip and user memory will 504 byte can store enough data for many applications such as door control access , amiibo data , cashless payment , e-tickets ,etc .Fully compliance with NFC forum type 2 and ISO 14443A protocol .

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 .

Plus S 2K 13.56MHz RFID Key Tag 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. The Plus is the only mainstream IC compatible with MF 1K and Mf 4K ,and it uses AES -128 ( advanced Encrption Standard ) for authentication , data integrity and encrption ,besides it available in two versions ,Plus S and  Plus X , both versions have 2kB or 4kB EEPROM as optional for you  .It is widely using for public transprtation , access management , electronic toll collection and loyalty programs