1) Working frequency:125khz,13.56mhz 2) Chip:EM4100/125kHz, MIFARE1S50/S70/13.56MHz 3) Applications: Access control ,etc. Features:1) Size:41*32*4.2mm2) Working frequency: 125kHz, 13.56MHz3) Material: ABS4) Chip: Mifare1 chip, TM chip5) Color: purple, blue, gray, yellow,mahogany6) Packing: 100pcs/polybag7) Applications:Access control, hotel locks, staff attendance and salary management, school ...