Standard RFID Card,125Khz ;EM4100;Reader Distance: 1-8cm; | Material : PVC ; With Double-sided pvc clear film; and Waterproof | Compatible with all ID door access devices or ID reader; | Suitable for Door Entry Access Control System and Attendance etc; | NOTE: Compatible with the RFID 125Khz Card Reader; Contactless transmission of data, Only can be read, can't be rewritten, programmed or used to copy other RFID cards