50pcs T5577 RFID hotel key fobs 125KHz keychain rewritable readable and writable

Description

This is a
125KHz keychain  which can be repeatedly copied, erased and written. Also can work with 125kHZ HID cards.
If you want to buy the compatible card copier,please click:
https://www.ebay.com/itm/222874501486
It can be written with an ID number too.
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. Package included: 50pcs RFID Rewritable Keyfobs.
4. Working Mode: Read-write modes - Can be used in 125KHz RFID card Copier/ Duplicator
5. Storage Capacity: 330 bit (264 free bit availability)
6. Reading distance is 0 - 10cm
Packaged included:
50*Black T5577 Keyfobs