... 3.Support transparent data transfer 4. Support DDNS IP modem, RS232 modem, GSM IP modem, GPRS data modem, data terminal ... 8V user card interface, 15KV ESD protectionPowerTerminal block interface, reverse-voltage and overvoltage protectionTerminal ... PortPower InputItemContentStandard PowerDC 12V/0.5APower RangeDC 5~35VPower ConsumptionWorking StatesPower ConsumptionCommunication50-80mA@12VDC; ...