Operating Frequency: 125KHz Chip: EM4100, EM4102 or its 64Bit compatible chip TK4100, etc Sensing distance: 2~10cm Working temperature: -20°C.+80°C(-4°F.+176°F) Packaging materials: PVC, ABS, TSIAJ, TSIAJ YUG HAUV TSEV, Paper Dimensions: Thin cards 85.5×54×0.88mm Thick cards 85.5×54×1.80mm Encapsulation process: laminated, self-adhesive, ultrasonic encapsulation Notice: JavaScript yuav tsum tau rau cov ntsiab lus no.