1、4G Wireless Internet Access: Support the connection switching between Wan port and 4G network, and give priority to the use of Wan port wired network. You can set parameters such as Apn. 2、Anti Drop: Support online detection, automatic reconnection after dropping, ensure that the device is always online, support monitoring the online status of the network device accessed by the Lan port, and report through the platform. 3、RS485 RS422 Design: Support RS485 and RS232 serial port transparent transmission and for Modbus Rtu to Tcp; Gps is supported, and positioning data can be released through Mqtt. 4、Compatible Protocols: Support Vpn protocols such as L2TP, Ipsec and Openvpn; Support Iptables firewall; Support for Modbus and Mqtt protocols and Ssl encryption. 5、Complete Router Functions: With multiple internet access modes, automatic allocation, designated Ip, PPPoE. Support dynamic Ddns: support peanut shell, 88IP and dyndns domain name service providers. 6、Remote Management: Support Sms and email for alarm, support web page remote upgrade, cloud remote background management and remote configuration. Support one time timer, periodic timer and cycle timer.