frequency 13.56MHz/125khz, standard ISO15693, ISO14443 TK4100,EM4200,M1, F08, ICODE2 chip are optional material is PVC+epoxy. Physical ParameterSize46×31mmPackaging MaterialPackage by transparent epoxy resinPackagingBox PackageEnvironmental ParameterWorking Temperature-25°C~+75°CPerformance ParameterFrequency13.56MhzStandardISO15693 /ISO18000-3Read Range3~8cm(Related to the chip types & reader) ...