A multi-purpose RFID key fob is made up of RFID chip & antenna with the ABS housing and filled with epoxy resin.
RFID Plastic Key Fob for Access Control System
The RFID key fob is small and durable, waterproof and anti-fall without fading. The RFID chip response frequency includes LF (125KHz), HF (13.56MHz), and Ultra-High Frequency (915MHz). It is commonly used for access control, attendance, identity authentication, payment, etc.