Main technyske parameters Working frekwinsje: 125KHz Applicable cards: iButton card, 125KHz card Card reading time: 0.2s Induction distance: 0cm Indicator light: 2 LED(red/white) Krêft: Any standard USB Port or via USB/220V adapter, or from 2×CR2020 batteries Working Temperature: -20ºC~+65ºC Material: Plastic (wetterticht, but not suitable for hard environmental conditions) Plastic casing color: brown Size: 100× 33 × 10 mm