It also can be written with an HID number.
You can use it for door access, elevator access, parking and other fields.
If you want to buy the compatible card copier, please click below link:
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
Packaged included:
10*Blue T5577 Keyfobs
10*Black T5577 Keyfobs
10*Green T5577 Keyfobs
10*Red T5577 Keyfobs
10*Yellow T5577 Keyfobs