General description These 50 pieces of Access Control Cards operate at a frequency of 125 KHz and utilize TK4100 / EM4100 chip types. They are designed for various applications including ID identification, logistics, VIP access, e-payment, access control and security, loyalty systems, parking management, and time attendance. Each key features a unique global UID number. Technical specifications Frequency: 125 KHz Chip type: TK4100 / EM4100 Material: PVC Color: White Measurement allowed error: +/- 1-3 cm Other information This card cannot be used for copying and requires access control authorization for card issuance. Package Contents: 50 x Access Control Card Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.