DS-K7M102-M
M1 Contactless Smart card, Frequency: 13.56vMHz - Designed with the PVC and AB glue - Dimension(L×W×H): 26 mm × 50 mm × 4 mm (1.02" × 1.97" × 0.16") - suggest to be used with the below reader series:DS-K1107M/MK?DS-K1108M/MK?DS-K1104M/MK