Chapter 2 – Hardware Information24IoT Gateway System AIOT-QAPin Signal Pin Signal1 DCDBX 2 NC3 RXBX 4 RTSBX5 TXBX 6 CTSBX7 DTRB 8 NC9 Ground2.4.15 DC 5V or 9V~24V Input Connector (CN16)123Pin Signal1 5V or 9V~24V2 Ground3 Ground2.4.16 DC 5V or 9V~24V Input Connector (CN17)5V or 9V~24VGND