Technology parameters RFID chip: TK4100 + MF 1K S50 (TK4100 fully compatible with EM4102) Kakawanda: LF 125KHz + HF 13.56MHz Protocol standards: ISO/IEC 14443 TypeA Read and write distance: 2.5~10cm (related to the antenna size and card reader) Read and write time: 1-2ms Endurance: >100,000 times Data retention: >10 years Working temperature: -20℃ ~ + 85 ℃ (mwando 90%) Saizi: CR80, 85.5×54×0.84mm, or specified …