Specifications: Pre-programmed with unique 18-digit ID number in each card.(The first 10 digitals is ABA code, the last 8 digitals is wiegand code) This RFID card is read only and not rewritable Operation Frequency : 125KHz Standard : TK ID compatible Compatible with stand EM ID access devices or ID reader Contactless transmission of data and supply energy Ideal for use in ID and access control With card ID printing Color : White Material : PVC Operation Temperature : -40C~85C Note: Please notice that our RFID cards cannot be compatible with UHF reader and encrypted readers, for example, the reader of following brands: HID, Cobra, APCiK,Paradox,Radio,Honeywell,etc Please consult your technician to ensure your reader will support normal (non-encrypted) standard EM4100 125KHz RFID cards Application: Access control attendance, hotel locks, staff attendance, school campus access, membership management, payment control, identification and security systems, parking lot entry and payment, social security management, transportation, municipal and ancillary service.