1. 3G, GPRS, wifi are optional 2, touch screen 3, coin/bill validator, card reader, barcode reader are optional The KIOSK can be ... :AC220V ± 10% 50Hz ± 1HzBarcode reader1D/2D barcode readerPackingplywood caseOther Optionals : UPS, Video Camera, Alarm System, Barcode Scanner,Track Ball, Photo Printer, Check Acceptor ...