High Frequency Rfid Key Fobs 125mhz

125 kHz Proximity ID Card Token Tags Keyfobs for Door Entry Access Control System, Read-Only. Color Blue. The Proximity Keyfobs can be used in various places, suitable for access control, hotel locks, employee attendance, campus visits, identification, security systems, parking lot access control, attendance systems, etc. It can also be used as an emergency chip for children and the elderly. Each read-only RFID chip has its ID.