1、There is a unique 10-digit ID number on each card (the RFID card is read-only and cannot be rewritten). 2、Compatible with EM4100, some encryption access controls are not supported, such as for HID, for COBRA, APCIK, etc. 3、Compatible with standard ID door access devices or ID readers. 4、Made with high quality PVC material for light weight and maximum durability. 5、Extensively applicable in access control attendance, membership management, identification, e-passport, vending machine, parking lot, etc. Features: There is a unique 10-digit ID number on each card (the RFID card is read-only and cannot be rewritten). Compatible with EM4100, some encryption access controls are not supported, such as for HID, for COBRA, APCIK, etc. Compatible with standard ID door access devices or ID readers. Made with high quality PVC material for light weight and maximum durability. Extensively applicable in access control attendance, membership management, identification, e-passport, vending machine, parking lot, etc. Specifications: Condition: Brand New Material: PVC Color: White Working Frequency: 125kHz Working Temperature: -40°C ~ 85°C Thickness: Approx.0.76mm Size: Approx.86*54/3.4*2.1in Application Places: Access control attendance, membership management, identification, e-passport, vending machine, parking lot, etc. Package List: 100 * Card