Main technical parameters Working frequency: 125KHz Applicable cards: iButton kaadị, 125KHz card Card reading time: 0.2s Induction distance: 0cm Indicator light: 2 Ikanam(red / ọcha) Power: Ọ bụla ọkọlọtọ USB Port ma ọ bụ site na USB / 220V nkwụnye, or from 2×CR2020 batteries Working Temperature: -20ºC~+65ºC Material: plastic (waterproof, ma ọ bụghị adabara ike na gburugburu ebe obibi na ọnọdụ) Plastic casing agba: brown Size: 100× 33 × 10mm