Main technical parameters Working frequency: 125KHz Applicable cards: kadi iButton, 125KHz card Card reading time: 0.2s Induction distance: 0cm Indicator light: 2 LED(nyekundu / nyeupe) Power: kiwango yoyote USB Port au kupitia USB / 220V ADAPTER, or from 2×CR2020 batteries Working Temperature: -20ºC~+65ºC Material: plastiki (inazuia maji, lakini haifai kwa mazingira magumu mno) Plastiki casing rangi: brown Size: 100× 33 × 10mm