20pcs EM 4100/4102 Keychains 125Khz RFID Proximity ID Card Token Tags Key Fobs

This is EM4100/4102 ,is Read-only, not programable,not HID!!!!

Description

Size:40.5*32*4.2mm
Material: PVC
Detecting distance: 3-10cm
ID tag suitable for: 125KHZ EM4100/4102 card reader and reading
Color: Blue/Grey/Black/Green/Red/Yellow

Package:20pcs/lot