Contactless MIFARE® DESFire® EV3 8K key fob that uses advanced radio frequency identification (RFID) technology to deliver secure and reliable physical access to premises. The key fob is made of impact-resistant matt polycarbonate and ultrasonically welded in a stainless steel frame, making it stable and durable, with IP67 and IK09 rating – perfect for carrying on a keyring. One bulk pack comes with 50 key fobs.