... )Interface TypeItemContentSerial1 RS232 port and 1 RS485(orRS422) port, 15KV ESD protectionData bits: 5, 6 ,7, 8Stop bits: 1, 1.5 ... (optional)SIM/UIMStandard 3V/1.8V user card interface, 15KV ESD protectionPowerTerminal block interface, reverse-voltage and overvoltage protectionTerminal BlockAntenna Interface ...