... the attendance data collection convenientPowerful management software, detailed instruction for you.Big capacity FLASH and CMOS chips, ... ModeOff-line/OnlineAuthentication Mode1:1, 1:NLanguageChinese, English, KoreanVoice PromptAvailableBellBuilt-in Timing BellSelf TestAvailablePower ManagementAuto Sleep ... Power Adapter 1x Software CD with english instruction manuals 1x Wall Mounting Plate 1x USB Cable ...