10PCS Read Only TK4100 Proximity 125Khz RFID Keyfobs Card Access Control Key Chain Card.

Packing List 10 PCS 125khz TK4100 rfid keyfobs, read only, Color Option. Specifications 125KHz read only RFID Proximity Keyfobs Chip type: TK4100 (can not be write and rewrite) Work with the product which has 125Khz RFID card reader. Reading distance: 3