Yarongtech 125Khz Rfid Card Proximity Em4100 Door Entry Access Blank White (Pack Of 10) 4890023603199

YARONGTECH

125khz EM4100 Chip,Read Only,can't rewritable,If you need rewritable cards,please contact with us All the chip has pre-programmed with Unique ID number,but UID can't change,and UID is pre-printed on the cards