1.L86*W54 *T1.8 ( or - 0.04)mm 2.materials:PVC,ABS,PET 3.Access control,indentification Introduction RFID ChipPhilips Mifare 1k, Mifare 4k1Kbyte EEPROM, organized in 16 sectors with 4 blocks of 16 bytes each(one block consists of 16 byte)Unique 4 byte serial number data retention 10 years, with 100,000 cycle write endurance and limitless readingWorking temperature-20°C~50°C( humidity 90%) ...