You can use it for door access, elevator access, parking and other fields.
Specification: 1. 100% brand new and high quality 2. Frequency: 125 KHz 3. Thickness:4mm 4. Size: 35mm x 28mm x 4mm 5. Package included: 50pcs RFID Writable Keyfobs. 6. Material: PVC 7. Working Mode: Read-write modes - Can be used in 125KHz RFID card Copier/ Duplicator 8. Storage Capacity: 330 bit (264 free bit availability) 9. Reading distance is 0 - 10cm