Airtime Topup machine 1.Can be used to pay expenses of gas ... .SMS,GPRS,STK,USSD 3.Customization supported Goodcom Airtime Topup Machine with SMS Printer GT5000S Send, receive, save and print SMS ... function:LCD display:128*64 dot-matrix LCD, with back light.Support receive sms message from GSM phone then ... The same series products:FCC Certificate: Goodcom Airtime Topup Machine with SMS Printer GT5000S