chip: TK4100 YÁ TK4101, fully compatible with EM4102 Working frequency: 125KHz Working pattern: Read-only Induction distance: 2~10cm Internal serial number: 5 bytes Size: 85.5×54×1,80 mm (ko 'nar oki portátil) Rango de R/W: 2~ cm, depending on the reader and the application environment Working temperature: -20°C~+80°C (-4°F~ + 176°F) materiales: ABS Wipe times: >100,000 times Data storage: 10 ya je̲ya