● Pre-programmed with a unique 10-digit ID number in each card (This RFID card is read-only and not rewritable.) 
● Operation Frequency : 125KHz 
● Standard: EM4100 compatible 
● Compatible with all ID door access devices or ID reader 
● Contactless transmission of data and supply energy 
● Ideal for use in ID and access control With card ID printing 

Note: 
Please notice that our RFID cards cannot be compatible with some encrypted readers, for example, the reader of following brands: HID, Cobra, APC¡K etc 
Please consult your technician to ensure your reader will support normal (non-encrypted) standard EM4100 125KHz RFID cards.