ARM HMI Smart Terminal 
                                
                                    ♦ Support Android, Linux+QT, Ubuntu system
♦ The same circuit board can support different operating systems and various
   sizes of display touch screens
♦ Support wireless communication WIFI(2.4G+5.8G), BT, 4G, NB-IoT
♦ Complete peripheral communication interface: RS232, RS-485, RJ-45, USB
    , TF, GPIO
                                    
                                    + Inquiry