Frequency: 125 KHz Chip type: TK4100 / EM4100 Application: ID Identification, Logistics, VIP , E-payment, Access Control & Security, Loyalty System, Parking Management, Time Attendance, etc. Each Key with an global UID number. Description: NOTE: This card cannot be used for copying and requires access control authorization for card issuance. Report Item Read Only Card RFID Card 10pcs/lot in different chip type 125khz EM4100 TK4100 RFID Cards Material: PVC colour: White Package Contents: 100 x Access Control Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.