RFID Passive Key FOB Tag 13.56Mh Mifare 1K S50 ISO1443A Access Tracking Product information This RFID high frequency key fob tag is useful for access control applications, event management and for applications where items need to be tracked. This tag is encapsulated in an ultrasonically sealed plastic housing to protect the chip and antenna from adverse environmental conditions. This RFID key fob is Waterproof and is resistant to immersion in salt water, alcohol, oil, 10% HCL and ammonia.